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"Keeseon S. Eom"

Case Report

Thelazia callipaeda (Nematoda: Spirurida) infections in 2 wildlife species, Prionailurus bengalensis and Nyctereutes procyonoides, in Korea
Jinho Jang, Young-Seok Park, YoungMin Yun, Keeseon S. Eom, Seongjun Choe
Parasites Hosts Dis 2025;63(1):95-101.
Published online February 25, 2025
DOI: https://doi.org/10.3347/PHD.24079
Thelazia callipaeda (Spirurida, Thelaziidae), a parasitic eye worm causing thelaziasis has been reported in humans and dogs in Korea. However, its occurrence in other potential reservoir hosts, including wild animals, remains unclear. In the present study, we described the 2 cases of thelaziasis from both of feral and captive wild animal in Korea. In August and November 2017, 2 cases of the parasitic infections were found in the third eyelid of rescued leopard cat Prionailurus bengalensis and reared raccoon dog Nyctereutes procyonoides at the Chungnam Wild Animal Rescue Center. A total of 20 and 24 worms were detected from the left and right eyes of leopard cat, respectively. In the left eye of the raccoon dog, 5 worms were recognized. Male worms were 969–11,860 μm long (10,600 μm on average) and 300–320 μm width (315 μm on average). Female worms were 13,430–15,330 (14,480) μm long and 320–370 (344) μm wide in size. They commonly had a characteristic scalariform buccal cavity and short esophagus. The vulva openings were located at the anterior of esophago-intestinal junction in females. The thelaziasis is reported in 2 species of wildlife, P. bengalensis and N. procyonoides, for the first time in Korea.

Citations

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  • Detection of intestinal parasites in leopard cat fecal samples using shotgun metagenomics
    Jun Ho Choi, Singeun Oh, Myung-hee Yi, Dongjun Kang, Du-Yeol Choi, Xavier Chavarria, Arwa Shatta, Yoon Hee Cho, Seongjun Choe, Seung-Hun Lee, Ju Yeong Kim
    Parasites, Hosts and Diseases.2025; 63(4): 349.     CrossRef
  • 3,078 View
  • 92 Download
  • Crossref

Brief Communication

Morphological and Molecular Characterization of Philometroides seriolae from Japanese Amberjack Seriola quinqueradiata caught in East Sea, Republic of Korea
Seongjun Choe, Keeseon S. Eom
Korean J Parasitol 2022;60(1):45-49.
Published online February 23, 2022
DOI: https://doi.org/10.3347/kjp.2022.60.1.45
The Japanese amberjack Seriolae quinqueradiata is one of the most consumed fish species among the Koreans. However, information regarding parasitic infection in Japanese amberjack is scarce. This study described the morphological and molecular characteristics of a species of philometrid nematode, Philometroides seriolae, which was recovered from Japanese amberjack. This fish was caught in the sea of Goseong-gun, Gangwon-do, Republic of Korea (Korea). Six P. seriolae (Nematoda: Philometridae) were recovered from 2 Japanese amberjacks. These parasites were subgravid female which were 325-420 mm long and 2.95-3.27 mm wide. Furthermore, they had typical papillae distributed on their body surface with 14 papillae at the apical view. Sequence analysis of the small subunits of ribosomal RNA (SSU rRNA) showed high sequence identity (99.8%, 1,607/1,611-bp) with that of P. seriolae (GenBank accession no. FJ155811). This nematode species has been newly added to the Korean nematode fauna.

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  • Seasonal change and phylogenetic position of Kamegainema cingula (Nematoda: Dracunculidae) parasitic in Japanese giant salamanders
    Karin Tsuchida, Misako Urabe, Kanto Nishikawa
    International Journal for Parasitology: Parasites and Wildlife.2025; 26: 101052.     CrossRef
  • On the Evolutionary History of Philometridae (Nematoda: Dracunculoidea): Integrative Taxonomy Reveals Evidence of Character Diversification and Host–Parasite Cophylogenetic Patterns
    Lorena Gisela Ailán-Choke, Fabiano Paschoal, João Victor Couto, Felipe Bisaggio Pereira
    Diversity.2023; 15(6): 763.     CrossRef
  • Parasites in the Skeletal Muscle of Amberjacks Seriola spp. in Japan: A Review
    Kazuo Ogawa
    Fish Pathology.2023; 58(4): 127.     CrossRef
  • 4,650 View
  • 205 Download
  • 3 Web of Science
  • Crossref

Original Article

Genotypes of Echinococcus Species from Cattle in Tanzania
Mohammed Mebarek Bia, Seongjun Choe, Barakaeli Abdieli Ndosi, Hansol Park, Yeseul Kang, Chatanun Eamudomkarn, Tilak Chandra Nath, Sunmin Kim, Hyeong-Kyu Jeon, Dongmin Lee, Keeseon S. Eom
Korean J Parasitol 2021;59(5):457-464.
Published online October 22, 2021
DOI: https://doi.org/10.3347/kjp.2021.59.5.457
Cystic echinococcosis is a zoonotic parasitic disease caused by Echinococcus species. Tanzania is one of the endemic countries with cystic echinococcosis. This study focussed on identifying genotypes of Echinococcus spp. in Tanzania. We collected 7 cysts from cattle in Mwanza municipal (n=4) and Loliondo district (n=3). The cysts from Mwanza were all E. ortleppi and fertile. In contrast, the cysts from Loliondo were all E. granulosus sensu stricto and sterile. Two from the 4 cysts were a new haplotype of E. ortleppi (G5). These results can improve the preventive and control programs for humans and livestock in Tanzania. To our knowledge, this study is considered the first to identify the genotype and haplotype of Echinococcus spp. in Tanzania.

Citations

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  • Occurrence of Echinococcus felidis in Apex Predators and Warthogs in Tanzania: First Molecular Evidence of Leopards as a New, Definitive Host and Implications for Ecosystem Health
    Barakaeli Abdieli Ndossi, Eblate Ernest Mjingo, Mary Wokusima Zebedayo, Seongjun Choe, Hansol Park, Lee Dongmin, Keeseon S. Eom, Mohammed Mebarek Bia
    Pathogens.2025; 14(5): 443.     CrossRef
  • 5,611 View
  • 124 Download
  • 2 Web of Science
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In Memoriam

Professor Han-Jong Rim (1931-2021): A Life of Parasitology and Parasite Control in This Wormy World
Keeseon S. Eom
Korean J Parasitol 2021;59(2):183-184.
Published online April 22, 2021
DOI: https://doi.org/10.3347/kjp.2021.59.2.183
  • 3,517 View
  • 83 Download

Brief Communication

Occurrence of a Hybrid Between Taenia saginata and Taenia asiatica Tapeworms in Cambodia
Taehee Chang, Bong-Kwang Jung, Sooji Hong, Hyejoo Shin, Seungwan Ryoo, Jeonggyu Lee, Keon Hoon Lee, Hansol Park, Keeseon S. Eom, Virak Khieu, Rekol Huy, Woon-Mok Sohn, Jong-Yil Chai
Korean J Parasitol 2021;59(2):179-182.
Published online April 22, 2021
DOI: https://doi.org/10.3347/kjp.2021.59.2.179
Human infection with Taenia asiatica or a hybrid between Taenia saginata and T. asiatica has not been reported in Cambodia. We detected for the first time a hybrid form between T. saginata and T. asiatica in Preah Vihear Province, Cambodia. An adult tapeworm specimen, i.e., 75 cm long strobila without scolex, was expelled from a 27-year-old man after praziquantel medication and purging. It was morphologically indistinguishable between T. saginata and T. asiatica. Several proglottids were molecularly analyzed to confirm the tapeworm species. The mitochondrial gene encoding cytochrome c oxidase subunit 1 (cox1) and nuclear genes encoding elongation factor-1α (ef1) and ezrin-radixin-moesin (ERM)-like protein (elp) were sequenced, and a single-allele analysis was performed to confirm the haploid genotype. The results revealed that our sample showed a discrepancy between the mitochondrial and 2 nuclear genes. It possessed homozygous sequences typical of T. saginata at cox1 and ef1 loci. However, it was heterozygous at the elp locus, with 1 allele in T. asiatica (elpA) and 1 in T. saginata (elpC), which indicates that it is a hybrid between T. saginata and T. asiatica. The present results confirmed the presence of a hybrid between T. saginata and T. asiatica in Cambodia and strongly suggest the existence of also ‘pure’ T. asiatica in Cambodia.

Citations

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  • Molecular Identification and Appraisal of the Genetic Variation of Taenia saginata in Central Regions of Vietnam
    Giang Tran Thi, Ilenia Azzena, Fabio Scarpa, Piero Cossu, Cong Danh Le, Phuong Anh Ton Nu, Thi Minh Chau Ngo, Daria Sanna, Marco Casu
    Life.2022; 12(1): 70.     CrossRef
  • Case Report: Molecular Diagnosis Revealing an Intestinal Infection of a Hybridized Tapeworm (Taenia saginata and Taenia asiatica) to Human in Yunnan, China
    Kan-Kan Chu, Ye Qiu, Ce-Heng Liao, Zhi You, Zuo-Shun He, Wen Fang, Hong-Ying Li, Peter Daszak, Jun-Jie Hu, Yun-Zhi Zhang, Xing-Yi Ge
    Frontiers in Gastroenterology.2022;[Epub]     CrossRef
  • 5,428 View
  • 102 Download
  • 2 Web of Science
  • Crossref

Original Articles

Mitochondrial Genome of Spirometra theileri Compared with Other Spirometra Species
Barakaeli Abdieli Ndosi, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Tilak Chandra Nath, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom
Korean J Parasitol 2021;59(2):139-148.
Published online April 22, 2021
DOI: https://doi.org/10.3347/kjp.2021.59.2.139
This study was carried out to provide information on the taxonomic classification and analysis of mitochondrial genomes of Spirometra theileri. One strobila of S. theileri was collected from the intestine of an African leopard (Panthera pardus) in the Maswa Game Reserve, Tanzania. The complete mtDNA sequence of S. theileri was 13,685 bp encoding 36 genes including 12 protein genes, 22 tRNAs and 2 rRNAs with absence of atp8. Divergences of 12 protein-coding genes were as follow: 14.9% between S. theileri and S. erinaceieuropaei, 14.7% between S. theileri and S. decipiens, and 14.5% between S. theileri with S. ranarum. Divergences of 12 proteins of S. theileri and S. erinaceieuropaei ranged from 2.3% in cox1 to 15.7% in nad5, while S. theileri varied from S. decipiens and S. ranarum by 1.3% in cox1 to 15.7% in nad3. Phylogenetic relationship of S. theileri with eucestodes inferred using the maximum likelihood and Bayesian inferences exhibited identical tree topologies. A clade composed of S. decipiens and S. ranarum formed a sister species to S. erinaceieuropaei, and S. theileri formed a sister species to all species in this clade. Within the diphyllobothridean clade, Dibothriocephalus, Diphyllobothrium and Spirometra formed a monophyletic group, and sister genera were well supported.

Citations

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  • Diversity and biology of Spirometra tapeworms (Cestoda: Diphyllobothriidea), zoonotic parasites of wildlife: A review
    Roman Kuchta, Anna J. Phillips, Tomáš Scholz
    International Journal for Parasitology: Parasites and Wildlife.2024; 24: 100947.     CrossRef
  • 5,308 View
  • 108 Download
  • 1 Web of Science
  • Crossref
Morphological and Molecular Identification of Spirometra Tapeworms (Cestoda: Diphyllobothriidae) from Carnivorous Mammals in the Serengeti and Selous Ecosystems of Tanzania
Barakaeli Abdieli Ndosi, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Tilak Chandra Nath, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom
Korean J Parasitol 2020;58(6):653-660.
Published online December 29, 2020
DOI: https://doi.org/10.3347/kjp.2020.58.6.653
Spirometra tapeworms (Cestoda: Diphyllobothriidae) collected from carnivorous mammals in Tanzania were identified by the DNA sequence analysis of the mitochondrial cytochrome c oxidase subunit 1 (cox1) and internal transcribed spacer 1 (ITS1), and by morphological characteristics. A total of 15 adult worms were collected from stool samples and carcasses of Panthera leo, Panthera pardus, and Crocuta crocuta in the Serengeti and Selous ecosystems of Tanzania. Three Spirometra species: S. theileri, S. ranarum and S. erinaceieuropaei were identified based on morphological features. Partial cox1 sequences (400 bp) of 10 specimens were revealed. Eight specimens showed 99.5% similarity with Spirometra theileri (MK955901), 1 specimen showed 99.5% similarity with the Korean S. erinaceieuropaei and 1 specimen had 99.5% similarity with Myanmar S. ranarum. Sequence homology estimates for the ITS1 region of S. theileri were 89.8% with S. erinaceieuropaei, 82.5% with S. decipiens, and 78.3% with S. ranarum; and 94.4% homology was observed between S. decipiens and S. ranarum. Phylogenetic analyses were performed with 4 species of Spirometra and 2 species of Dibothriocephalus (=Diphyllobothrium). By both ML and BI methods, cox1 and ITS1 gave well supported, congruent trees topology of S. erinaceieuropaei and S. theileri with S. decipiens and S. ranarum forming a clade. The Dibothriocephalus species were sisters of each other and collectively forming successive outgroups. Our findings confirmed that 3 Spirometra species (S. theileri, S. ranarum, and S. erinaceieuropaei) are distributed in the Serengeti and Selous ecosystems of Tanzania.

Citations

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  • Molecular confirmation of Spirometra mansoni (Cestoda: Diphyllobothriidae) in Javanese keelback water snake (Fowlea melanzosta) in Indonesia
    Ryanka Edila, Seongjun Choe, Mustofa Helmi Effendi, Lucia Tri Suwanti, John Yew Huat Tang
    International Journal for Parasitology: Parasites and Wildlife.2025; 28: 101150.     CrossRef
  • Description of Spirometra asiana sp. nov. (Cestoda: Diphyllobothriidae) found in wild boars and hound dogs in Japan
    Hiroshi Yamasaki, Hiromu Sugiyama, Yasuyuki Morishima, Hirotaka Kobayashi
    Parasitology International.2024; 98: 102798.     CrossRef
  • Molecular Characterization of Spirometra erinaceieuropaei from Jungle Cat (Felis chaus) in North of Iran
    Mahboobeh Salimi, Meysam Sharifdini, Eshrat Beigom Kia
    Acta Parasitologica.2024; 69(1): 574.     CrossRef
  • Diversity and biology of Spirometra tapeworms (Cestoda: Diphyllobothriidea), zoonotic parasites of wildlife: A review
    Roman Kuchta, Anna J. Phillips, Tomáš Scholz
    International Journal for Parasitology: Parasites and Wildlife.2024; 24: 100947.     CrossRef
  • Mitochondrial Genome of Spirometra theileri Compared with Other Spirometra Species
    Barakaeli Abdieli Ndosi, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Tilak Chandra Nath, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom
    The Korean Journal of Parasitology.2021; 59(2): 139.     CrossRef
  • 5,101 View
  • 119 Download
  • 5 Web of Science
  • Crossref

Case Reports

Ocular Sparganosis: The First Report of Spirometra ranarum in Thailand
Wilai Saksirisampant, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom, Buravej Assavapongpaiboon, Sunisa Sintuwong, Wasee Tulvatana
Korean J Parasitol 2020;58(5):577-581.
Published online October 22, 2020
DOI: https://doi.org/10.3347/kjp.2020.58.5.577
A 22-year-old Thai man from the Northeast region presented with acute eye swelling, itching, and discharge on his left eye. He was suspected of having gnathostomiasis and treated with albendazole and prednisolone for 3 weeks. Nine months later, he was treated with high-dose oral prednisolone for the preliminary and differential diagnoses with thyroid-associated orbitopathy and lymphoma. He had been administered prednisolone intermittently over a few years. Then he developed a painless movable mass at the left upper eyelid and recurrent pseudotumor oculi was suspected. The surgical removal of the mass was performed. A white pseudosegmented worm revealed a definite diagnosis of ocular sparganosis by a plerocercoid larva. Molecular diagnosis of the causative species was made based on the mitochondrial cytochrome c oxidase subunit 1 (cox1) gene. Proper technique of extraction and amplification of short fragments DNA from formalin-fixed paraffin-embedded tissue successfully identified parasite species. The result from the sequencing of the PCR-amplified cox1 fragments in this study showed 99.0% sequence homology to Spirometra ranarum. This is the first report of S. ranarum in Thailand.

Citations

Citations to this article as recorded by  Crossref logo
  • Molecular Characterization of Spirometra erinaceieuropaei from Jungle Cat (Felis chaus) in North of Iran
    Mahboobeh Salimi, Meysam Sharifdini, Eshrat Beigom Kia
    Acta Parasitologica.2024; 69(1): 574.     CrossRef
  • Sparganosis
    S. B. Chuelov, A. L. Rossina
    CHILDREN INFECTIONS.2024; 23(1): 44.     CrossRef
  • Sparganosis in the Indian Sub-continent and the Middle East
    Yukifumi Nawa, Mio Tanaka, Masahide Yoshikawa
    Parasites, Hosts and Diseases.2024; 62(3): 263.     CrossRef
  • Medical Parasitology Taxonomy Update, June 2020–June 2022
    Blaine A. Mathison, Richard S. Bradbury, Bobbi S. Pritt, Romney M. Humphries
    Journal of Clinical Microbiology.2023;[Epub]     CrossRef
  • Parasites, champignons et atteintes oculaires
    Hélène Yera, Marie-Fleur Durieux, Dominique Chabasse, Marie-Laure Dardé
    Revue Francophone des Laboratoires.2023; 2023(552): 44.     CrossRef
  • Sparganosis parasitic tumor: Resectability and postoperative outcome, and analysis of cases from an endemic area in Indochina
    Amnuay Kleebayoon, Viroj Wiwanitkit
    Formosan Journal of Surgery.2023; 56(5): 160.     CrossRef
  • An annotated checklist of the eukaryotic parasites of humans, exclusive of fungi and algae
    Blaine A. Mathison, Sarah G. H. Sapp
    ZooKeys.2021; 1069: 1.     CrossRef
  • 5,848 View
  • 123 Download
  • 5 Web of Science
  • Crossref
First Infestation Case of Sarcoptic Mange from a Pet Rabbit Oryctolagus cuniculus in Republic of Korea
Seongjun Choe, Sungryong Kim, Ki-Jeong Na, Tilak Chandra Nath, Barakaeli Abdieli Ndosi, Yeseul Kang, Mohammed Mebarek Bia, Dongmin Lee, Hansol Park, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom
Korean J Parasitol 2020;58(3):315-319.
Published online June 26, 2020
DOI: https://doi.org/10.3347/kjp.2020.58.3.315
In November 2019 a 5-month-old mixed-breed rabbit presented to Chungbuk National University Veterinary Teaching Hospital, Cheongju-si, Chungbuk, Republic of Korea (Korea) with symptoms comprising pruritus, crusts on skin, poor appetite and reduced defecation. The rabbit was purchased 2 months prior from a pet shop located in a big market, and that the symptoms were first observed about 2 weeks prior to the hospital visit. Physical examination revealed that the patient had crust formation and alopecia on the nose together with lesions on the digits. A skin scraping test was performed using mineral oil and a high density of mites was observed by microscopy. Each mite showed a round, tortoise-like body with 4 comparatively short pairs of legs. The anus was located at the terminal unlike with suspected pathogen, Notoedres cati. Based on morphological characteristics, we identified the mite as Sarcoptes sp. Ivermectin was administered weekly by subcutaneous injection at a dosage of 0.4 mg/kg, and 4 weeks of follow-up study revealed the patient was fully recovered. And no more mites were detected from the case. This is the first case report of sarcoptic mange in a pet rabbit in Korea.

Citations

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  • Genetic and Serological Survey of Sarcoptic Mange (Sarcoptes scabiei) in Wild Boars (Sus scrofa) in South Korea
    Sanghyun Lee, Garam Kim, So-Jeong Kim, Weon-Hwa Jheong, Dong-Hyuk Jeong
    Animals.2024; 14(23): 3490.     CrossRef
  • Zoonotic Episodes of Scabies: A Global Overview
    Barbara Moroni, Luca Rossi, Charlotte Bernigaud, Jacques Guillot
    Pathogens.2022; 11(2): 213.     CrossRef
  • Mange in Rabbits: An Ectoparasitic Disease with a Zoonotic Potential
    Wafaa A. Abd El-Ghany, Remo Lobetti
    Veterinary Medicine International.2022; 2022: 1.     CrossRef
  • 10,340 View
  • 182 Download
  • 3 Web of Science
  • Crossref

Original Articles

Descriptions of Two Digenean Trematodes Found from a Chinese Sea Snake, Laticauda semifasciata, in Republic of Korea
Seongjun Choe, Il-Hun Kim, Min-Seop Kim, Hae Rim Lee, Youngjun Kim, Keeseon S. Eom
Korean J Parasitol 2020;58(3):279-285.
Published online June 26, 2020
DOI: https://doi.org/10.3347/kjp.2020.58.3.279
We intended to describe 2 digenean trematodes found from a Chinese sea snake, Laticauda semifasciata, as the new fauna in the Republic of Korea. The snake was caught offshore of Aewol-eup, Jeju-do, in August 2017. Two species of fluke were found in the lung and intestinal tract of the snake in the process of necropsy. They were identified as Pulmovermis cyanovitellosus Coil and Kuntz, 1960 and Harmotrema laticaudae Yamaguti, 1933, respectively based on the morphological characters. Pulmovermis cyanovitellosus showed elongated body with well-developed and elongated male genital system and compact vitelline. And H. laticaudae was characterized by linguiform body with heavily armed cirrus with excretory system. This is the first time both species have been reported and described off the Korean coast. We provide morphological descriptions with some comments on their biology and geographical distribution. In addition, the taxonomic validity of the genus Hydrophitrema Sandars, 1960 was discussed, in terms of morphological descriptions and host ranges. This study provides novel insight into digenean fluke species existing off the coast of Korea.

Citations

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  • Rejection of the concept of hemiurid genus Pulmovermis (Digenea: Hemiuridae) and other taxonomic propositions: new morphological and molecular data regarding Lecithochirium cyanovitellosum (Coil and Kuntz, 1960) Urabe and Sokolov, comb. nov. (formerly Pul
    Misako Urabe, Takahide Sasai, Sergey G. Sokolov
    Systematic Parasitology.2025;[Epub]     CrossRef
  • Polyphyly of the Dinurinae Looss, 1907 (Digenea: Hemiuridae) and resurrection of the Mecoderinae Skrjabin & Guschanskaja, 1954 based on novel collection of Tubulovesicula laticaudi Parukhin, 1969 from marine elapid snakes in Sri Lanka
    Storm Blas Martin, M.L.I. De Silva, Erandi Pathirana, R.P.V.J. Rajapakse
    Parasitology International.2023; 97: 102776.     CrossRef
  • Paraharmotrema karinganiense n. gen., n. sp. (Digenea: Liolopidae) infecting the intestine of serrated hinged terrapin (Pelusios sinuatus), east African black mud turtle (Pelusios subniger), and South African helmeted turtle (Pelomedusa galeata) and a phy
    Haley R. Dutton, Louis H. DuPreez, Misako Urabe, Stephen A. Bullard
    International Journal for Parasitology: Parasites and Wildlife.2022; 17: 43.     CrossRef
  • 6,722 View
  • 112 Download
  • 4 Web of Science
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Effectiveness of Mass Drug Administration on Neglected Tropical Diseases in Schoolchildren in Zanzibar, Tanzania
Ju Yeong Kim, Seobo Sim, Eun Joo Chung, Han-Jong Rim, Jong-Yil Chai, Duk-Young Min, Keeseon S. Eom, Khalfan A. Mohammed, Iddi S. Khamis, Tai-Soon Yong
Korean J Parasitol 2020;58(2):109-119.
Published online April 30, 2020
DOI: https://doi.org/10.3347/kjp.2020.58.2.109
Soil-transmitted helminths and Schistosoma haematobium affect more than 3 billion people globally and mainly occur in sub-Saharan Africa. The present study assessed the overall infection status of a 1716-student cohort of school-children in Zanzibar and applied mass drug administration (MDA) to the cohort from 2007 to 2009. Schools in Pemba, Zanzibar, had a much higher prevalence of soil-transmitted helminth infections than those in Unguja, and the Chaani, Ghana, and Machui schools of Unguja exhibited high S. haematobium infection rates. The MDA program only partially controlled parasite infections, owing to high rates of re-infection. The infection rate of S. haematobium across all 10 schools, for example, was only reduced by 1.8%, and even this change not significant, even though the S. haematobiuminfection rates of the Chaani and Mzambarauni schools were significantly reduced from 64.4 and 23.4%, respectively, at the first screening, to 7.3 and 2.3% at the last screening. The overall infection rate of Ascaris lumbricoides was reduced from 36.0% at the first screening to 22.6% at the last screening. However, the infection rates for both Trichuris trichiuraand hookworm were generally unaffected by MDA. In the future, parasite control programs should involve strategically designed MDA schedules and holistic intervention (e.g., sanitation improvement, hygiene behavior changes, and control of intermediated hosts).

Citations

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  • Effects of paediatric schistosomiasis control programmes in sub-Saharan Africa: A systematic review
    Maryline Vere, Wilma ten Ham-Baloyi, Paula Ezinne Melariri, Raquel Inocencio da Luz
    PLOS ONE.2024; 19(5): e0301464.     CrossRef
  • Soil-transmitted helminth (STH) infections in the Wolaita zone in Southern Ethiopia: mid-stage evaluation of the Geshiyaro project and progress towards the interruption of transmission
    Birhan Mengistu, Ewnetu Firdawek Liyew, Melkie Chernet, Geremew Tasew, Rosie Maddren, Benjamin Collyer, Ufaysa Anjulo, Adugna Tamiru, Kathryn Forbes, Zelalem Mehari, Kebede Deribe, Teshale Yadeta, Mihretab Salasibew, Getachew Tollera, Roy Anderson
    Parasites & Vectors.2024;[Epub]     CrossRef
  • Parasitic helminth infections in humans modulate Trefoil Factor levels in a manner dependent on the species of parasite and age of the host
    Babatunde Adewale, Jonathan R. Heintz, Christopher F. Pastore, Heather L. Rossi, Li-Yin Hung, Nurudeen Rahman, Jeff Bethony, David Diemert, James Ayorinde Babatunde, De’Broski R. Herbert, Subash Babu
    PLOS Neglected Tropical Diseases.2021; 15(10): e0009550.     CrossRef
  • 7,562 View
  • 181 Download
  • 4 Web of Science
  • Crossref

Brief Communication

Echinostoma aegyptica (Trematoda: Echinostomatidae) Infection in Five Riparian People in Savannakhet Province, Lao PDR
Jong-Yil Chai, Bong-Kwang Jung, Taehee Chang, Hyejoo Shin, Woon-Mok Sohn, Keeseon S. Eom, Tai-Soon Yong, Duk-Young Min, Bounlay Phammasack, Bounnaloth Insisiengmay, Han-Jong Rim
Korean J Parasitol 2020;58(1):67-72.
Published online February 29, 2020
DOI: https://doi.org/10.3347/kjp.2020.58.1.67
Human infection with Echinostoma aegyptica Khalil and Abaza, 1924 (Trematoda: Echinostomatidae) is extremely rare. In this study, we confirmed E. aegyptica infection in 5 riparian residents living along the Mekong River in Savannakhet Province, Lao PDR. The patients revealed eggs of Opisthorchis viverrini/minute intestinal flukes, echinostomes, and other parasites in fecal examinations using the Kato-Katz technique. Following treatment with praziquantel 30-40 mg/kg and pyrantel pamoate 10-15 mg/kg in a single dose and purging with magnesium salts, adult specimens of various helminth species were collected. Among the trematodes, echinostome flukes of 4.5-7.6 mm in length (n = 134; av. 22.3 specimens per case) were of taxonomic interest and subjected in this study. The flukes were morphologically characterized by having total 43-45 collar spines arranged in 2 alternating rows (corner spines usually 5 on each side) and compatible with previous descriptions of E. aegyptica. The patients were mixed-infected with other helminths, so specific clinical manifestations due to this echinostome fluke were difficult to determine. The present paper describes for the first time human E. aegyptica infections in Lao PDR. This is the second report of human infection (2nd-6th cases) with E. aegyptica in the world following the first one from China.

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  • High endemicity of Opisthorchis viverrini infection among people in northern Cambodia confirmed by adult worm expulsion
    Bong-Kwang Jung, Sooji Hong, Taehee Chang, Jaeeun Cho, Seungwan Ryoo, Keon Hoon Lee, Jeonggyu Lee, Woon-Mok Sohn, Sung-Jong Hong, Virak Khieu, Rekol Huy, Jong-Yil Chai
    Scientific Reports.2023;[Epub]     CrossRef
  • Neglected food-borne trematodiases: echinostomiasis and gastrodiscoidiasis
    Rafael Toledo, María Álvarez-Izquierdo, J. Guillermo Esteban, Carla Muñoz-Antoli
    Parasitology.2022; 149(10): 1319.     CrossRef
  • Echinostoma mekongi n. sp. (Digenea: Echinostomatidae) from Riparian People along the Mekong River in Cambodia
    Jaeeun Cho, Bong-Kwang Jung, Taehee Chang, Woon-Mok Sohn, Muth Sinuon, Jong-Yil Chai
    The Korean Journal of Parasitology.2020; 58(4): 431.     CrossRef
  • 8,078 View
  • 121 Download
  • 5 Web of Science
  • Crossref

Original Articles

Echinostoma macrorchis Metacercariae in Cipangopaludina chinensis malleata from Xiengkhuang Province, Lao PDR and Morphologies of Adults from Experimental Animals
Woon-Mok Sohn, Byoung-Kuk Na, Dongmin Lee, Keeseon S. Eom, Tai-Soon Yong, Jong-Yil Chai, Duk-Young Min
Korean J Parasitol 2019;57(6):657-664.
Published online December 31, 2019
DOI: https://doi.org/10.3347/kjp.2019.57.6.657
We identified the echinostome metacercariae in Chinese mystery snails, Cipangopaludina chinensis malleata, from Xiengkhuang Province, Lao PDR with morphologies of adult worms recovered. Total 20 snails were examined with artificial digestion method and then the collected metacercariae were orally infected to a mouse and a rat. Adult worms recovered from experimental animals were observed with a light microscope and a SEM. The metacercariae were round, 125×123 ?m in average size, with a moderately thick cyst wall, collar spines distributed in the head collar and excretory granules in 2 canals of excretory tube. Adult flukes (3-week-old in a rat) were elongated, ventrally curved and 5.310×1.023 mm in average size. Head collar distinct, bearing 43 collar spines with 5 end group ones on each side. Oral sucker subterminal, prepharynx very short, pharynx well developed, and esophagus relatively short. Cirrus sac well developed, with a saccular seminal vesicle, and ventral sucker very large. Ovary round and on the median line of the body. Testes tandom and elongated. Eggs operculated, elliptical and 90×57 ?m in average size. In the SEM observation, the head crown prominent, with 43 collar spines resembled with horns of younger stag. Scale-like tegumental spines were densely distributed on the surface between the head collar and ventral sucker, and their densities were decreased posteriorly. Conclusively, the metacercariae detected in C. chinensis malleata from Lao PDR were identified as those of Echinostoma macrorchis based on the morphological characteristics of adult worms.

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  • Development of a duplex loop-mediated isothermal amplification together with lateral flow dipstick assay for the detection and discrimination of parasitic infections in chickens between cestodes belonging to genus Raillietina and trematodes in family Echi
    Wasin Panich, Thanawan Tejangkura, Thapana Chontananarth
    Research in Veterinary Science.2025; 185: 105539.     CrossRef
  • The Nuclear Ribosomal Transcription Units of Two Echinostomes and Their Taxonomic Implications for the Family Echinostomatidae
    Yu Cao, Ye Li, Zhong-Yan Gao, Bo-Tao Jiang
    Biology.2025; 14(8): 1101.     CrossRef
  • Development and utilization of a visual loop-mediated isothermal amplification coupled with a lateral flow dipstick (LAMP-LFD) assay for rapid detection of Echinostomatidae metacercaria in edible snail samples
    Wasin Panich, Phonkawin Jaruboonyakorn, Awika Raksaman, Thanawan Tejangkura, Thapana Chontananarth
    International Journal of Food Microbiology.2024; 418: 110732.     CrossRef
  • High diversity of trematode metacercariae that parasitize freshwater gastropods in Bangkok, Thailand, and their infective situations, morphologies and phylogenetic relationships
    Pichit Wiroonpan, Thapana Chontananarth, Jong-Yil Chai, Watchariya Purivirojkul
    Parasitology.2022; 149(7): 913.     CrossRef
  • Unravelling another mystery: Parasite escape and host‐switching vary spatially in non‐indigenous populations of Japanese mystery snails
    Amy E. Fowler, Grace A. Loonam, April M. H. Blakeslee
    Freshwater Biology.2022; 67(8): 1316.     CrossRef
  • Snail-borne zoonotic trematodes in edible viviparid snails obtained from wet markets in Northern Thailand
    K. Chantima, C. Rika
    Journal of Helminthology.2020;[Epub]     CrossRef
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  • 7 Web of Science
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Infections of Two Isthmiophora Species (Digenea: Echinostomatidae) in Wild Mammals from Republic of Korea with Their Morphological Descriptions
Seongjun Choe, Ki-Jeong Na, Youngjun Kim, Dong-Hyuk Jeong, Jeong-Jin Yang, Keeseon S. Eom
Korean J Parasitol 2019;57(6):647-656.
Published online December 31, 2019
DOI: https://doi.org/10.3347/kjp.2019.57.6.647
Isthmiophora hortensis (Digenea: Echinostomatidae) is a dominant echinostome in animal reservoir hosts and humans in the Republic of Korea (Korea). We intended to investigate the infection status with this echinostome species in the several species of wild animals and describe the morphological characteristics in the faunistic view point. A total of 175 animal carcasses belonging to 3 families, i.e., Canidae, Felidae and Mustelidae, were collected from the southern regions of Korea from March 2010 to July 2017. Isthmiophora spp. worms were recovered from the small intestines of each animal under a stereomicroscope after washing of intestinal contents. Isthmiophora hortensis was recovered from 4 species of wild carnivores, i.e., Nyctereutes procyonoides (3/107: 2.8%), Mustela sibirica (11/31: 35.5%), Meles lucurus (2/3: 33.3%) and Martes flavigula (1/2: 50%). The other 3 carnivores comprising stray dogs, cat and leopard cat were negative for I. hortensis infection (0/2, 0/10 and 0/12, respectively). Specimens obtained from the Lutra lutra (6/8: 75%) were identified as a distinct species, I. inermis, by morphological comparison. Isthmiophora inermis has thinner body, elongate testes and different anterior limits of vitelline fields. Detailed morphological descriptions and comparisons with the morphological characteristics are provided. Conclusively, it was confirmed for the first time that 3 species of mustelid mammals, i.e., M. sibirica, M. lucurus, and M. flavigula, are to be the new definitive hosts of I. hortensis in Korea. Additionally, I. inermis is to be newly added in the Korean echinostome fauna.

Citations

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  • Development of the head collar and collar spines during the larval stages of Isthmiophora hortensis (Digenea: Echinostomatidae)
    Woon-Mok Sohn, Won-Jae Jung, Eun-Hee Shin, Jong-Yil Chai
    Parasites, Hosts and Diseases.2024; 62(1): 145.     CrossRef
  • Diversity of fecal parasitomes of wild carnivores inhabiting Korea, including zoonotic parasites and parasites of their prey animals, as revealed by 18S rRNA gene sequencing
    Cheolwoon Woo, Mohammad Imtiaj Uddin Bhuiyan, Kyung Yeon Eo, Woo-Shin Lee, Junpei Kimura, Naomichi Yamamoto
    International Journal for Parasitology: Parasites and Wildlife.2023; 21: 179.     CrossRef
  • Helminths in Invasive Raccoons (Procyon lotor) from Southwest Germany
    Nico P. Reinhardt, Marion Wassermann, Jessica Härle, Thomas Romig, Lina Kurzrock, Janosch Arnold, Ernst Großmann, Ute Mackenstedt, Reinhard K. Straubinger
    Pathogens.2023; 12(7): 919.     CrossRef
  • Euryhelmis squamula (Digenea: Heterophyidae) Recovered from Korean Raccoon Dog, Nyctereutes procyonoides koreensis, in Korea
    Hyeon Cheol Kim, Eui Ju Hong, Si Yun Ryu, Jinho Park, Jeong Gon Cho, Do Hyeon Yu, Joon Seok Chae, Kyoung Seong Choi, Bae Keun Park
    The Korean Journal of Parasitology.2021; 59(3): 303.     CrossRef
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  • 4 Web of Science
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Identity of Spirometra theileri from a Leopard (Panthera pardus) and Spotted Hyena (Crocuta crocuta) in Tanzania
Keeseon S. Eom, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Barakaeli Abdieli Ndosi, Tilak Chandra Nath, Chatanun Eamudomkarn, Julius Keyyu, Robert Fyumagwa, Simon Mduma, Hyeong-Kyu Jeon
Korean J Parasitol 2019;57(6):639-645.
Published online December 31, 2019
DOI: https://doi.org/10.3347/kjp.2019.57.6.639
In the present study, a Spirometra species of Tanzania origin obtained from an African leopard (Panthera pardus) and spotted hyena (Crocuta crocuta) was identified based on molecular analysis of cytochrome c oxidase I (cox1) and NADH dehydrogenase subunit I (nad1) as well as by morphological observations of an adult tapeworm. One strobila and several segments of a Spirometra species were obtained from the intestine of an African male leopard (Panthera pardus) and spotted hyena (Crocuta Crocuta) in the Maswa Game Reserve of Tanzania. The morphological characteristics of S. theileri observed comprised 3 uterine loops on one side and 4 on the other side of the mid-line, a uterine pore situated posterior to the vagina and alternating irregularly either to the right or left of the latter, and vesicular seminis that were much smaller than other Spirometra species. Sequence differences in the cox1 and nad1 genes between S. theileri (Tanzania origin) and S. erinaceieuropaei were 10.1% (cox1) and 12.0% (nad1), while those of S. decipiens and S. ranarum were 9.6%, 9.8% (cox1) and 13.0%, 12.6% (nad1), respectively. The morphological features of the Tanzania-origin Spirometra specimens coincided with those of S. theileri, and the molecular data was also consistent with that of S. theileri, thereby demonstrating the distribution of S. theileri in Tanzania. This places the leopard (Panthera pardus) and spotted hyena (Crocuta Crocuta) as new definitive hosts of this spirometrid tapeworm.

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    Ryanka Edila, Seongjun Choe, Mustofa Helmi Effendi, Lucia Tri Suwanti, John Yew Huat Tang
    International Journal for Parasitology: Parasites and Wildlife.2025; 28: 101150.     CrossRef
  • Deciphering the global genetic structure of Spirometra mansoni and S. erinaceieuropaei based on 28S ribosomal RNA: Insights into taxonomical revaluation and population dynamics
    Anil Kumar Nehra, Rasmita Panda, Prem Sagar Maurya, Ansu Kumari, Aman Dev Moudgil
    Parasitology Research.2025;[Epub]     CrossRef
  • Description of Spirometra asiana sp. nov. (Cestoda: Diphyllobothriidae) found in wild boars and hound dogs in Japan
    Hiroshi Yamasaki, Hiromu Sugiyama, Yasuyuki Morishima, Hirotaka Kobayashi
    Parasitology International.2024; 98: 102798.     CrossRef
  • Molecular Characterization of Spirometra erinaceieuropaei from Jungle Cat (Felis chaus) in North of Iran
    Mahboobeh Salimi, Meysam Sharifdini, Eshrat Beigom Kia
    Acta Parasitologica.2024; 69(1): 574.     CrossRef
  • Diversity and biology of Spirometra tapeworms (Cestoda: Diphyllobothriidea), zoonotic parasites of wildlife: A review
    Roman Kuchta, Anna J. Phillips, Tomáš Scholz
    International Journal for Parasitology: Parasites and Wildlife.2024; 24: 100947.     CrossRef
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    Erastus Mulinge, Eberhard Zeyhle, Cecilia Mbae, Lucy Gitau, Timothy Kaburu, Japhet Magambo, Ute Mackenstedt, Thomas Romig, Peter Kern, Marion Wassermann
    Parasitology.2023; 150(5): 468.     CrossRef
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    T. N. Sivkova, D. R. Khantemirov, D. O. Gimranov, A. V. Lavrov, A. V. Kochnev
    Doklady Biological Sciences.2022; 504(1): 82.     CrossRef
  • Morphometrical and Molecular Characterization of Oesophagostomum columbianum (Chabertiidae: Oesophagostominae) and Haemonchus contortus (Trichostrongylidae: Haemonchinae) Isolated from Goat (Capra hircus) in Sylhet, Bangladesh
    Tilak Chandra Nath, Dongmin Lee, Hansol Park, Seongjun Choe, Barakaeli Abdieli Ndosi, Yeseul Kang, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Uday Kumar Mohanta, Kazi Mehetazul Islam, Jamal Uddin Bhuiyan, Hyeong-Kyu Jeon, Keeseon S. Eom, José F. Silveira
    Journal of Parasitology Research.2021; 2021: 1.     CrossRef
  • Mitochondrial Genome of Spirometra theileri Compared with Other Spirometra Species
    Barakaeli Abdieli Ndosi, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Tilak Chandra Nath, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom
    The Korean Journal of Parasitology.2021; 59(2): 139.     CrossRef
  • A survey of intestinal helminths in domestic dogs in a human–animal–environmental interface: the Oloisukut Conservancy, Narok County, Kenya
    E. Mulinge, E. Zeyhle, J. Mpario, M. Mugo, L. Nungari, B. Ngugi, B. Sankale, P. Gathura, J. Magambo, M. Kachani
    Journal of Helminthology.2021;[Epub]     CrossRef
  • African Lions and Zoonotic Diseases: Implications for Commercial Lion Farms in South Africa
    Jennah Green, Catherine Jakins, Eyob Asfaw, Nicholas Bruschi, Abbie Parker, Louise de Waal, Neil D’Cruze
    Animals.2020; 10(9): 1692.     CrossRef
  • Ocular Sparganosis: The First Report of Spirometra ranarum in Thailand
    Wilai Saksirisampant, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom, Buravej Assavapongpaiboon, Sunisa Sintuwong, Wasee Tulvatana
    The Korean Journal of Parasitology.2020; 58(5): 577.     CrossRef
  • Morphological and Molecular Identification of Spirometra Tapeworms (Cestoda: Diphyllobothriidae) from Carnivorous Mammals in the Serengeti and Selous Ecosystems of Tanzania
    Barakaeli Abdieli Ndosi, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Tilak Chandra Nath, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom
    The Korean Journal of Parasitology.2020; 58(6): 653.     CrossRef
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  • 164 Download
  • 12 Web of Science
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Mitochondrial DNA Sequence Variability of Spirometra Species in Asian Countries
Hyeong-Kyu Jeon, Keeseon S. Eom
Korean J Parasitol 2019;57(5):481-487.
Published online October 31, 2019
DOI: https://doi.org/10.3347/kjp.2019.57.5.481
Mitochondrial DNA sequence variability of Spirometra erinaceieuropaei in GenBank was observed by reinvestigation of mitochondrial cox1 and cytb sequences. The DNA sequences were analyzed in this study, comprising complete DNA sequences of cox1 (n=239) and cytb (n=213) genes. The 10 complete mitochondrial DNA sequences of Spirometra species were compared with those of Korea, China and Japan. The sequences were analyzed for nucleotide composition, conserved sites, variable sites, singleton sites and parsimony-informative sites. Phylogenetic analyses was done using neighbor joining, maximum parsimony, Bayesian inference and maximum-likelihood on cox1 and cytb sequences of Spirometra species. These polymorphic sites identified 148 (cox1) and 83 (cytb) haplotypes within 239 and 213 isolates from 3 Asian countries. Phylogenetic tree topologies were presented high-level confidence values for the 2 major branches of 2 Spirometra species containing S. erinaceieuropaei and S. decipiens, and S. decipiens sub-clades including all sequences registered as S. erinaceieuropaei in cox1 and cytb genes. These results indicated that mitochondrial haplotypes of S. erinaceieuropaei and S. decipiens were found in the 3 Asian countries.

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  • Molecular Characterization of Spirometra erinaceieuropaei from Jungle Cat (Felis chaus) in North of Iran
    Mahboobeh Salimi, Meysam Sharifdini, Eshrat Beigom Kia
    Acta Parasitologica.2024; 69(1): 574.     CrossRef
  • Morphological observation and molecular phylogeny of Spirometra decipiens complex 1 (Cestoda: Diphyllobothriidae) found in cat from Chile
    Fernando Fredes, Rubén Mercado, Ismael Pereira Salas, Hiromu Sugiyama, Hirotaka Kobayashi, Hiroshi Yamasaki
    Parasitology International.2022; 87: 102493.     CrossRef
  • Insights to helminth infections in food and companion animals in Bangladesh: Occurrence and risk profiling
    Tilak Chandra Nath, Keeseon S. Eom, Seongjun Choe, Saiful Islam, Siblee Sadik Sabuj, Eva Saha, Rumman Hossain Tuhin, Barakaeli Abdieli Ndosi, Yeseul Kang, Sunmin Kim, Mohammed Mebarek Bia, Hansol Park, Dongmin Lee
    Parasite Epidemiology and Control.2022; 17: e00245.     CrossRef
  • Genetic structure of Spirometra mansoni (Cestoda: Diphyllobothriidae) populations in China revealed by a Target SSR-seq method
    Fang Fang Xu, Wen Qing Chen, Wei Liu, Sha Sha Liu, Yi Xing Wang, Jing Chen, Jing Cui, Xi Zhang
    Parasites & Vectors.2022;[Epub]     CrossRef
  • Spirometra species from Asia: Genetic diversity and taxonomic challenges
    Hiroshi Yamasaki, Oranuch Sanpool, Rutchanee Rodpai, Lakkhana Sadaow, Porntip Laummaunwai, Mesa Un, Tongjit Thanchomnang, Sakhone Laymanivong, Win Pa Pa Aung, Pewpan M. Intapan, Wanchai Maleewong
    Parasitology International.2021; 80: 102181.     CrossRef
  • First Clinical Cases of Spirometrosis in Two Cats in Korea
    Joohyung Kim, Younsung Ock, Kihwan Yang, Seongjun Choe, Kyung-Mee Park, Wan-Kyu Lee, Kyung-Chul Choi, Soochong Kim, Dongmi Kwak, Seung-Hun Lee
    The Korean Journal of Parasitology.2021; 59(2): 153.     CrossRef
  • Low prevalence of spargana infection in farmed frogs in the Yangtze River Delta of China
    Xiaoli Zhang, Rongsheng Mi, Yehua Zhang, Shijie Zhang, Tao Sun, Haiyan Jia, Yan Huang, Haiyan Gong, Xiangan Han, Zhaoguo Chen
    Infection, Genetics and Evolution.2020; 85: 104466.     CrossRef
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    Juan Pablo Arrabal, Matías Gastón Pérez, Lucas Federico Arce, Laura Kamenetzky
    International Journal for Parasitology: Parasites and Wildlife.2020; 13: 142.     CrossRef
  • Ocular Sparganosis: The First Report of Spirometra ranarum in Thailand
    Wilai Saksirisampant, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom, Buravej Assavapongpaiboon, Sunisa Sintuwong, Wasee Tulvatana
    The Korean Journal of Parasitology.2020; 58(5): 577.     CrossRef
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  • 9 Web of Science
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Brief Communication

Echinochasmus caninus n. comb. (Trematoda: Echinostomatidae) Infection in Eleven Riparian People in Khammouane Province, Lao PDR
Jong-Yil Chai, Taehee Chang, Bong-Kwang Jung, Hyejoo Shin, Woon-Mok Sohn, Keeseon S. Eom, Tai-Soon Yong, Duk-Young Min, Bounlay Phammasack, Bounnaloth Insisiengmay, Han-Jong Rim
Korean J Parasitol 2019;57(4):451-456.
Published online August 31, 2019
DOI: https://doi.org/10.3347/kjp.2019.57.4.451
Adult specimens of Echinochasmus caninus n. comb. (Verma, 1935) (Trematoda: Echinostomatidae) (syn. Episthmium caninum Yamaguti, 1958) were recovered from 11 riparian people who resided along the Mekong River in Khammouane Province, Lao PDR. In fecal examinations done by the Kato-Katz technique, the cases revealed eggs of Opisthorchis viverrini/minute intestinal flukes, hookworms, and in 2 cases echinostome eggs. To recover the adult helminths, praziquantel 30-40 mg/kg and pyrantel pamoate 10-15 mg/kg in a single dose were given and purged with magnesium salts. Various species of trematodes (including O. viverrini and Haplorchis spp.), cestodes, and nematodes were recovered from their diarrheic stools. Among the trematodes, small echinostome flukes (n=42; av. 3.8 specimens per case) of 0.7-1.2 mm in length are subjected in this study. They are morphologically characterized by having 24 collar spines interrupted dorsally and anterior extension of vitellaria from the cirrus sac or genital pore level to the posterior end of the body. Particularly based on this extensive distribution of vitellaria, the specific diagnosis was made as Echinochasmus caninus. The cases were co-infected with various other helminth parasites; thus, clinical manifestations specific for this echinostome infection were difficult to determine. The present paper describes for the first time human E. caninus infections in Lao PDR. Our cases marked the 4-14th human infections with this echinostome around the world following the 3 previous cases reported from Thailand.

Citations

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  • Neglected food-borne trematodiases: echinostomiasis and gastrodiscoidiasis
    Rafael Toledo, María Álvarez-Izquierdo, J. Guillermo Esteban, Carla Muñoz-Antoli
    Parasitology.2022; 149(10): 1319.     CrossRef
  • General overview of the current status of human foodborne trematodiasis
    Jong-Yil Chai, Bong-Kwang Jung
    Parasitology.2022; 149(10): 1262.     CrossRef
  • Echinostoma aegyptica (Trematoda: Echinostomatidae) Infection in Five Riparian People in Savannakhet Province, Lao PDR
    Jong-Yil Chai, Bong-Kwang Jung, Taehee Chang, Hyejoo Shin, Woon-Mok Sohn, Keeseon S. Eom, Tai-Soon Yong, Duk-Young Min, Bounlay Phammasack, Bounnaloth Insisiengmay, Han-Jong Rim
    The Korean Journal of Parasitology.2020; 58(1): 67.     CrossRef
  • Echinostoma mekongi n. sp. (Digenea: Echinostomatidae) from Riparian People along the Mekong River in Cambodia
    Jaeeun Cho, Bong-Kwang Jung, Taehee Chang, Woon-Mok Sohn, Muth Sinuon, Jong-Yil Chai
    The Korean Journal of Parasitology.2020; 58(4): 431.     CrossRef
  • Echinostoma macrorchis Metacercariae in Cipangopaludina chinensis malleata from Xiengkhuang Province, Lao PDR and Morphologies of Adults from Experimental Animals
    Woon-Mok Sohn, Byoung-Kuk Na, Dongmin Lee, Keeseon S. Eom, Tai-Soon Yong, Jong-Yil Chai, Duk-Young Min
    The Korean Journal of Parasitology.2019; 57(6): 657.     CrossRef
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Case Report

A Clonorchiasis Case of a Leopard Cat, Prionailurus bengalensis euptilurus, Diagnosed by Ultrasonography and Egg Detection in Republic of Korea
Seongjun Choe, Dong-Hyuk Jeong, Jeong-Jin Yang, Jeongho Kim, Ki-Jeong Na, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Keeseon S. Eom
Korean J Parasitol 2019;57(3):299-302.
Published online June 30, 2019
DOI: https://doi.org/10.3347/kjp.2019.57.3.299
A clonorchiasis case in a captive leopard cat, Prionailurus bengalensis euptilurus, was confirmed by ultrasonographic findings and egg morphologies found in the bile juice sample in the Korea. The leopard cat was introduced from the wild habitat of Gyeongsangnam-do, to Cheongju Zoo in Cheongju-si, Chungcheongbuk-do, Korea in August 2014. Physical examinations were basically performed for quarantine and check-up health. The cat was comparatively good in health except anorexia. The cyst-like bile duct dilation and the increased echogenicity of gall bladder wall and hepatic parenchyma were observed by ultrasonography. Ultrasound-guided needle biopsy was conducted for collecting bile juice and the specimens were observed under light microscope. The numerous small trematode eggs were detected in the bile juice sample of the light microscopy. The eggs were 25-33 (28±3) μm by 18-22 (20±1) μm in size and showed typical characteristics of Clonorchis sinensis egg, i.e., a dominantly developed operculum, shoulder rim and dust-like wrinkles in surface. To treat the liver fluke infection, 20 mg/kg of praziquantel was orally administered only once to the case. Follow-up studies including fecal examinations were conducted during 2 years after treatment. But no more eggs were detected from the case. In the present study, we described the first clonorchiasis case of leopard cat, which was confirmed by ultrasonographic findings and egg morphologies from the bile juice sample in Korea.

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    Jun Ho Choi, Singeun Oh, Myung-hee Yi, Dongjun Kang, Du-Yeol Choi, Xavier Chavarria, Arwa Shatta, Yoon Hee Cho, Seongjun Choe, Seung-Hun Lee, Ju Yeong Kim
    Parasites, Hosts and Diseases.2025; 63(4): 349.     CrossRef
  • Metabarcoding of pathogenic parasites based on copro-DNA analysis of wild animals in South Korea
    Jun Ho Choi, Soo Lim Kim, Dong Kyun Yoo, Myung-hee Yi, Singeun Oh, Myungjun Kim, Sohyeon Yun, Tai-Soon Yong, Seongjun Choe, Jong Koo Lee, Ju Yeong Kim
    Heliyon.2024; 10(9): e30059.     CrossRef
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    Shin-Ichi Nakamura, Kiyokazu Ozaki, Chisa Minoura, Takamitsu Tsukahara
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    Min-Gyeong Seo, Kook-Young Han, Sang-Hyun Kim, Chang Keun Kang, Jong-Hyun Kim, Il-Hwa Hong
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  • Current status of Clonorchis sinensis and clonorchiasis in Korea: epidemiological perspectives integrating the data from human and intermediate hosts
    Won Gi Yoo, Woon-Mok Sohn, Byoung-Kuk Na
    Parasitology.2022; 149(10): 1296.     CrossRef
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Brief Communications

Complete Sequence of the Mitochondrial Genome of Spirometra ranarum: Comparison with S. erinaceieuropaei and S. decipiens
Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Sang-Hwa Lee, Keeseon S. Eom
Korean J Parasitol 2019;57(1):55-60.
Published online February 26, 2019
DOI: https://doi.org/10.3347/kjp.2019.57.1.55
This study was undertaken to determine the complete mitochondrial DNA sequence and structure of the mitochondrial genome of Spirometra ranarum, and to compare it with those of S. erinaceieuropaei and S. decipiens. The aim of this study was to provide information of the species level taxonomy of Spirometra spp. using the mitochondrial genomes of 3 Spirometra tapeworms. The S. ranarum isolate originated from Myanmar. The mitochondrial genome sequence of S. ranarum was compared with that of S. erinaceieuropaei (GenBank no. KJ599680) and S. decipiens (GenBank no. KJ599679). The complete mtDNA sequence of S. ranarum comprised 13,644 bp. The S. ranarum mt genome contained 36 genes comprising 12 protein-coding genes, 22 tRNAs and 2 rRNAs. The mt genome lacked the atp8 gene, as found for other cestodes. All genes in the S. ranarum mitochondrial genome are transcribed in the same direction and arranged in the same relative position with respect to gene loci as found for S. erinaceieuropaei and S. decipiens mt genomes. The overall nucleotide sequence divergence of 12 protein-coding genes between S. ranarum and S. decipiens differed by 1.5%, and 100% sequence similarity was found in the cox2 and nad6 genes, while the DNA sequence divergence of the cox1, nad1, and nad4 genes of S. ranarum and S. decipiens was 2.2%, 2.1%, and 2.6%, respectively.

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  • Molecular identification of sparganum of Spirometra mansoni isolated from the abdominal cavity of a domestic cat in Vietnam
    Yen Thi Hoang NGUYEN, Lan Anh Thi NGUYEN, Hieu VAN DONG, Hieu Duc DUONG, Ayako YOSHIDA
    Journal of Veterinary Medical Science.2024; 86(1): 96.     CrossRef
  • Spirometra species from Asia: Genetic diversity and taxonomic challenges
    Hiroshi Yamasaki, Oranuch Sanpool, Rutchanee Rodpai, Lakkhana Sadaow, Porntip Laummaunwai, Mesa Un, Tongjit Thanchomnang, Sakhone Laymanivong, Win Pa Pa Aung, Pewpan M. Intapan, Wanchai Maleewong
    Parasitology International.2021; 80: 102181.     CrossRef
  • Insight into One Health Approach: Endoparasite Infections in Captive Wildlife in Bangladesh
    Tilak Chandra Nath, Keeseon S. Eom, Seongjun Choe, Shahadat Hm, Saiful Islam, Barakaeli Abdieli Ndosi, Yeseul Kang, Mohammed Mebarek Bia, Sunmin Kim, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee
    Pathogens.2021; 10(2): 250.     CrossRef
  • Mitochondrial Genome of Spirometra theileri Compared with Other Spirometra Species
    Barakaeli Abdieli Ndosi, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Tilak Chandra Nath, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom
    The Korean Journal of Parasitology.2021; 59(2): 139.     CrossRef
  • Low prevalence of spargana infection in farmed frogs in the Yangtze River Delta of China
    Xiaoli Zhang, Rongsheng Mi, Yehua Zhang, Shijie Zhang, Tao Sun, Haiyan Jia, Yan Huang, Haiyan Gong, Xiangan Han, Zhaoguo Chen
    Infection, Genetics and Evolution.2020; 85: 104466.     CrossRef
  • 7,294 View
  • 138 Download
  • 5 Web of Science
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Infections with Digenean Trematode Metacercariae in Two Invasive Alien Fish, Micropterus salmoides and Lepomis macrochirus, in Two Rivers in Chungcheongbuk-do, Republic of Korea
Seongjun Choe, Hansol Park, Dongmin Lee, Yeseul Kang, Hyeong-Kyu Jeon, Keeseon S. Eom
Korean J Parasitol 2018;56(5):509-513.
Published online October 31, 2018
DOI: https://doi.org/10.3347/kjp.2018.56.5.509
Present study was performed to survey infection status of digenetic trematode metacercariae in 2 alien fish species, Micropterus salmoides (largemouth bass) and Lepomis macrochirus (bluegill), in 2 rivers draining Chungcheongbuk-do, Republic of Korea. A total of 107 largemouth bass and 244 bluegills were caught in Daecheong-ho (ho=lake) and Musim-cheon (a branch of Geum-gang), in Chungcheongbuk-do April-July 2015. Additionally, 68 native fish of 5 species, i.e., Zacco platypus, Hemibarbus longirostris, Carassius auratus, Pseudogobio esocinus and Puntungia herzi, were caught from the same water bodies. All of the fish collected were examined by artificial digestion method. The metacercariae of Centrocestus armatus, Clinostomum complanatum, Metagonimus sp. and Diplostomum spp. were detected from 4 out of 5 native fish species in Daecheong-ho. However, any metacercariae were not found from 87 M. salmoides and 177 L. macrochirus in Daecheong-ho. In Musim-cheon, metacercariae of Exorchis oviformis and Metacercaria hasegawai were detected from 78% Z. platypus and 34% L. macrochirus, but any metacercariae not found in M. salmoides. We report here that the 2 alien fish species were less infected with the metacercariae than the native ones. Surveys on the metacercariae in the alien fish species in geographically various rivers should be undertaken for better understanding on the role of alien fish species in the trematode infections in Republic of Korea.

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  • Infection Characteristics of Clonorchis sinensis Metacercariae in Fish from Republic of Korea
    Woon-Mok Sohn
    The Korean Journal of Parasitology.2022; 60(2): 79.     CrossRef
  • Characterization of Fish Assemblages and Standard Length Distributions among Different Sampling Gears Using an Artificial Neural Network
    Tae-Sik Yu, Chang Woo Ji, Young-Seuk Park, Kyeong-Ho Han, Ihn-Sil Kwak
    Fishes.2022; 7(5): 275.     CrossRef
  • Survey of Zoonotic Trematode Metacercariae in Fish from Water Systems of Geum-gang (River) in Republic of Korea
    Woon-Mok Sohn, Byoung-Kuk Na, Shin-Hyeong Cho, Cheon-Hyeon Kim, Min-Ah Hwang, Kyeong-Woo No, Jai-Dong Kim
    The Korean Journal of Parasitology.2021; 59(1): 23.     CrossRef
  • Diagnosis of Centrocestus formosanus Infection in Zebrafish (Danio rerio) in Italy: A Window to a New Globalization-Derived Invasive Microorganism
    Antonino Pace, Ludovico Dipineto, Serena Aceto, Maria Concetta Censullo, Maria Carmen Valoroso, Lorena Varriale, Laura Rinaldi, Lucia Francesca Menna, Alessandro Fioretti, Luca Borrelli
    Animals.2020; 10(3): 456.     CrossRef
  • Infection Status with Clonorchis sinensis Metacercariae in Fish from Yangcheon (Stream) in Sancheong-gun, Gyeongsangnam-do, Korea
    Woon-Mok Sohn, Byoung-Kuk Na, Shin-Hyeong Cho, Jung-Won Ju
    The Korean Journal of Parasitology.2019; 57(2): 145.     CrossRef
  • 7,969 View
  • 142 Download
  • 5 Web of Science
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Molecular and Morphologic Identification of Spirometra ranarum Found in the Stool of African Lion, Panthera leo in the Serengeti Plain of Tanzania
Keeseon S. Eom, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Sang-Hwa Lee, Julius Keyyu, Robert Fyumagwa, Hyeong-Kyu Jeon
Korean J Parasitol 2018;56(4):379-383.
Published online August 31, 2018
DOI: https://doi.org/10.3347/kjp.2018.56.4.379
The present study was performed with morphological and molecular analysis (cox1 and nad1 mitochondrial genes) to identify the proglottids of spirometrid tapeworm found in the stool of an African lion, Panthera leo, in the Serengeti plain of Tanzania. A strand of tapeworm strobila, about 75 cm in length, was obtained in the stool of a male African lion in the Serengeti National Park (34˚ 50’ E, 02˚ 30’ S), Tanzania, in February 2012. The morphological features of the adult worm examined exhibited 3 uterine coils with a bow tie appearance and adopted a diagonal direction in the second turn. The posterior uterine coils are larger than terminal uterine ball and the feature of uteri are swirling rather than spirally coiling. The sequence difference between the Spirometra species (Tanzania origin) and S. erinaceieuropaei (GenBank no. KJ599680) was 9.4% while those of S. decipiens (GenBank no. KJ599679) differed by 2.1% in the cox1 and nad1 genes. Phylogenetic tree topologies generated using the 2 analytic methods were identical and presented high level of confidence values for the 3 major branches of the 3 Spirometra species in the cox1 gene. The morphological and molecular findings obtained in this study were nearly coincided with those of S. ranarum. Therefore, we can know for the first time that the African lion, Panthera leo, is to the definitive host of this tapeworm.

Citations

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  • Canine proliferative sparganosis: a case report and review of larval cestodiasis in dogs
    Varvara Semenova, Heather D.S. Walden, Kelsey Bollenback, James R. Cook, Robert J. Ossiboff
    Journal of Comparative Pathology.2025; 219: 48.     CrossRef
  • Molecular confirmation of Spirometra mansoni (Cestoda: Diphyllobothriidae) in Javanese keelback water snake (Fowlea melanzosta) in Indonesia
    Ryanka Edila, Seongjun Choe, Mustofa Helmi Effendi, Lucia Tri Suwanti, John Yew Huat Tang
    International Journal for Parasitology: Parasites and Wildlife.2025; 28: 101150.     CrossRef
  • Molecular Characterization of Spirometra erinaceieuropaei from Jungle Cat (Felis chaus) in North of Iran
    Mahboobeh Salimi, Meysam Sharifdini, Eshrat Beigom Kia
    Acta Parasitologica.2024; 69(1): 574.     CrossRef
  • Diversity and biology of Spirometra tapeworms (Cestoda: Diphyllobothriidea), zoonotic parasites of wildlife: A review
    Roman Kuchta, Anna J. Phillips, Tomáš Scholz
    International Journal for Parasitology: Parasites and Wildlife.2024; 24: 100947.     CrossRef
  • Spirometra species from Asia: Genetic diversity and taxonomic challenges
    Hiroshi Yamasaki, Oranuch Sanpool, Rutchanee Rodpai, Lakkhana Sadaow, Porntip Laummaunwai, Mesa Un, Tongjit Thanchomnang, Sakhone Laymanivong, Win Pa Pa Aung, Pewpan M. Intapan, Wanchai Maleewong
    Parasitology International.2021; 80: 102181.     CrossRef
  • An initial coprological survey of parasitic fauna in the wild Amur leopard (Panthera pardus orientalis)
    Zhijun HOU, Zhiwei PENG, Yao NING, Dan LIU, Hongliang CHAI, Guangshun JIANG
    Integrative Zoology.2020; 15(5): 375.     CrossRef
  • African Lions and Zoonotic Diseases: Implications for Commercial Lion Farms in South Africa
    Jennah Green, Catherine Jakins, Eyob Asfaw, Nicholas Bruschi, Abbie Parker, Louise de Waal, Neil D’Cruze
    Animals.2020; 10(9): 1692.     CrossRef
  • Morphological and Molecular Identification of Spirometra Tapeworms (Cestoda: Diphyllobothriidae) from Carnivorous Mammals in the Serengeti and Selous Ecosystems of Tanzania
    Barakaeli Abdieli Ndosi, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Tilak Chandra Nath, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom
    The Korean Journal of Parasitology.2020; 58(6): 653.     CrossRef
  • Complete Sequence of the Mitochondrial Genome of Spirometra ranarum: Comparison with S. erinaceieuropaei and S. decipiens
    Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Sang-Hwa Lee, Keeseon S. Eom
    The Korean Journal of Parasitology.2019; 57(1): 55.     CrossRef
  • Identity of Spirometra theileri from a Leopard (Panthera pardus) and Spotted Hyena (Crocuta crocuta) in Tanzania
    Keeseon S. Eom, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Barakaeli Abdieli Ndosi, Tilak Chandra Nath, Chatanun Eamudomkarn, Julius Keyyu, Robert Fyumagwa, Simon Mduma, Hyeong-Kyu Jeon
    The Korean Journal of Parasitology.2019; 57(6): 639.     CrossRef
  • 9,731 View
  • 158 Download
  • 10 Web of Science
  • Crossref

Original Article

Molecular Genetic Findings of Spirometra decipiens and S. ranarum in Korea
Hyeong-Kyu Jeon, Sun Huh, Woon-Mok Sohn, Jong-Yil Chai, Keeseon S. Eom
Korean J Parasitol 2018;56(4):359-364.
Published online August 31, 2018
DOI: https://doi.org/10.3347/kjp.2018.56.4.359
The taxonomy of Spirometra species has been controversial despite the medical and veterinary importance. Currently, only a few Spirometra species are considered valid species in the genus Spirometra. In the present study, the distribution of Spirometra species obtained from animals in Korea were identified by molecular analysis of the mitochondrial cytochrome c oxidase I (cox1) gene. A total of 28 Spirometra species specimens were analyzed. These were all collected between 1973 and 2008 in the Republic of Korea. Mitochondrial cox1 sequences were examined for a total of 28 specimens comprising 14 S. decipiens and 14 S. ranarum. The difference in partial cox1 sequences (316 bp) between S. erinaceieuropaei (KJ599680) and S. ranarum (this study) was 9.3%, while that between S. decipiens (KJ599679) and S. ranarum (this study) was 2.2%. Genetic analyses identified 2 Spirometra species in animals such as cat, leopard cat, dog, duck and snake in Korea as S. decipiens and S. ranarum. S. decipiens and S. ranarum were present in Gyeongnam Province (P), Jeonnam P, Gangwon P, Chungbuk P, and Seoul. S. decipiens was found in tadpoles, snakes, ducks, cats, leopard cats and dogs, while S. ranarum was found in cats and dogs. The ratio of S. decipiens:S. ranarum calculated from the molecular data was 14:14 (or 1:1). These results indicate that S. decipiens and S. ranarum are sympatrically distributed in Korea.

Citations

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  • A Global Review of the Zoonotic Potential and Disease Risks of Amphibian Parasites in Bullfrog Aquaculture
    Meiqi Weng, Xinhua Liu, Chenxi Zhang, Rui Shu, Andrew Wang, Haotian Zhang, Xingqiang Wang, Huirong Yang, Jinyong Zhang
    Reviews in Aquaculture.2025;[Epub]     CrossRef
  • Description of Spirometra asiana sp. nov. (Cestoda: Diphyllobothriidae) found in wild boars and hound dogs in Japan
    Hiroshi Yamasaki, Hiromu Sugiyama, Yasuyuki Morishima, Hirotaka Kobayashi
    Parasitology International.2024; 98: 102798.     CrossRef
  • Identification of a Clinical Spirometra mansoni Plerocercoid Isolate Using Molecular and Morphological Data
    Si Si Ru, Chi Cheng, Peng Jiang, Xi Zhang
    Acta Parasitologica.2024; 69(2): 1304.     CrossRef
  • Metabarcoding of pathogenic parasites based on copro-DNA analysis of wild animals in South Korea
    Jun Ho Choi, Soo Lim Kim, Dong Kyun Yoo, Myung-hee Yi, Singeun Oh, Myungjun Kim, Sohyeon Yun, Tai-Soon Yong, Seongjun Choe, Jong Koo Lee, Ju Yeong Kim
    Heliyon.2024; 10(9): e30059.     CrossRef
  • Epidemiology, Diagnosis, and Prevention of Sparganosis in Asia
    Wei Liu, Tengfang Gong, Shuyu Chen, Quan Liu, Haoying Zhou, Junlin He, Yong Wu, Fen Li, Yisong Liu
    Animals.2022; 12(12): 1578.     CrossRef
  • Morphological Characteristics and Molecular Phylogenetic Evidence Support the Existence of a New Spirometra Species, Spirometra Asiana, (Cestoda: Diphyllobothriidae) in the Wild Boar
    Hiroshi Yamasaki, Hiromu Sugiyama, Yasuyuki Morishima
    SSRN Electronic Journal .2022;[Epub]     CrossRef
  • Spirometra species from Asia: Genetic diversity and taxonomic challenges
    Hiroshi Yamasaki, Oranuch Sanpool, Rutchanee Rodpai, Lakkhana Sadaow, Porntip Laummaunwai, Mesa Un, Tongjit Thanchomnang, Sakhone Laymanivong, Win Pa Pa Aung, Pewpan M. Intapan, Wanchai Maleewong
    Parasitology International.2021; 80: 102181.     CrossRef
  • First Clinical Cases of Spirometrosis in Two Cats in Korea
    Joohyung Kim, Younsung Ock, Kihwan Yang, Seongjun Choe, Kyung-Mee Park, Wan-Kyu Lee, Kyung-Chul Choi, Soochong Kim, Dongmi Kwak, Seung-Hun Lee
    The Korean Journal of Parasitology.2021; 59(2): 153.     CrossRef
  • A Case of Sparganosis Caused by Spirometra decipiens on the Femur
    Shoko YOGO, Sakurako IMAMURA, Kiko NAGAI, Kayo HARADA, Eiji NAGAYASU, Haruhiko MARUYAMA, Kazunori URABE
    Nishi Nihon Hifuka.2021; 83(5): 453.     CrossRef
  • Low prevalence of spargana infection in farmed frogs in the Yangtze River Delta of China
    Xiaoli Zhang, Rongsheng Mi, Yehua Zhang, Shijie Zhang, Tao Sun, Haiyan Jia, Yan Huang, Haiyan Gong, Xiangan Han, Zhaoguo Chen
    Infection, Genetics and Evolution.2020; 85: 104466.     CrossRef
  • Complete Sequence of the Mitochondrial Genome of Spirometra ranarum: Comparison with S. erinaceieuropaei and S. decipiens
    Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Sang-Hwa Lee, Keeseon S. Eom
    The Korean Journal of Parasitology.2019; 57(1): 55.     CrossRef
  • Genetic diversity of two mitochondrial DNA genes inSpirometra erinaceieuropaei(Cestoda: Diphyllobothridae) from Poland
    Marta Kołodziej‐Sobocińska, Joanna Stojak, Eliza Kondzior, Iwona Ruczyńska, Jan M. Wójcik
    Journal of Zoological Systematics and Evolutionary Research.2019; 57(4): 764.     CrossRef
  • 8,524 View
  • 126 Download
  • 10 Web of Science
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Brief Communication

Differential Diagnosis of Human Sparganosis Using Multiplex PCR
Hyeong-Kyu Jeon, Kyu-Heon Kim, Woon-Mok Sohn, Keeseon S. Eom
Korean J Parasitol 2018;56(3):295-300.
Published online June 30, 2018
DOI: https://doi.org/10.3347/kjp.2018.56.3.295
Human sparganosis was diagnosed by morphological and genetic analyses in Korea. The complete mitochondrial genomes of Spirometra erinaceieuropaei and S. decipiens isolated in Korea have been recorded. Present study was performed to provide information to diagnose the etiologic agent of sparganosis by multiplex PCR using mitochondrial genome sequences of S. erinaceieuropaei and S. decipiens. In an effort to examine the differential diagnosis of spirometrid tapeworms, multiplex PCR assays were performed on plerocercoid larvae of S. erinaceieuropaei and S. decipiens. The PCR products obtained using species-specific primers were positively detected in all PCR assays on mixture of S. erinaceieuropaei and S. decipiens DNA. S. erinaceieuropaei-specific bands (239 bp and 401 bp) were obtained from all PCR assays using a mixture of S. erinaceieuropaei-specific primers (Se/Sd-1800F and Se-2018R; Se/Sd-7955F and Se-8356R) and S. erinaceieuropaei template DNA. S. decipiens-specific bands (540 bp and 644 bp) were also detected in all PCR assays containing mixtures of S. decipiens-specific primers (Se/Sd-1800F and Sd-2317R; Se/Sd-7955F and Sd-8567R) and S. decipiens template DNA. Sequence analyses on these species-specific bands revealed 100% sequence identity with homologous regions of the mtDNA sequences of S. erinaceieuropaei and S. decipiens. The multiplex PCR assay was useful for differential diagnosis of human sparganosis by detecting different sizes in species-specific bands.

Citations

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  • Molecular, morphological and histopathological evidence of Spirometra mansoni in wild and domestic animals from Costa Rica
    Irene Alvarado-Hidalgo, Josué Campos-Camacho, Yuliana Arguedas-Morales, Luis M. Romero-Vega, Alejandro Alfaro-Alarcón, Gabriela Anchia-Ureña, Laura G. Bass, Ivan Berrocal-Ávila, Isabel Hagnauer, Roberto W.I. Olivares, Alberto Solano-Barquero, Rodolfo Trau
    Veterinary Parasitology: Regional Studies and Reports.2024; 51: 101030.     CrossRef
  • Epidemiology, Diagnosis, and Prevention of Sparganosis in Asia
    Wei Liu, Tengfang Gong, Shuyu Chen, Quan Liu, Haoying Zhou, Junlin He, Yong Wu, Fen Li, Yisong Liu
    Animals.2022; 12(12): 1578.     CrossRef
  • Genetic and Morphological Identification of Spirometra decipiens in Snakes and Domestic Dog Found in Cuba
    Alexander Morales, Rebeca M. Laird-Pérez, Virginia Capó, Enrique Iglesias, Luis Fonte, Arturo Plascencia-Hernández, Enrique J. Calderón, Keeseon S. Eom, Yaxsier de Armas, Héctor R. Pérez-Gómez
    Pathogens.2022; 11(12): 1468.     CrossRef
  • An annotated checklist of the eukaryotic parasites of humans, exclusive of fungi and algae
    Blaine A. Mathison, Sarah G. H. Sapp
    ZooKeys.2021; 1069: 1.     CrossRef
  • Large-scale survey of a neglected agent of sparganosis Spirometra erinaceieuropaei (Cestoda: Diphyllobothriidae) in wild frogs in China
    Xi Zhang, Xiu Hong, Shi Nan Liu, Peng Jiang, Shu Chuan Zhao, Chuan Xi Sun, Zhong Quan Wang, Jing Cui, David Blair
    PLOS Neglected Tropical Diseases.2020; 14(2): e0008019.     CrossRef
  • African Lions and Zoonotic Diseases: Implications for Commercial Lion Farms in South Africa
    Jennah Green, Catherine Jakins, Eyob Asfaw, Nicholas Bruschi, Abbie Parker, Louise de Waal, Neil D’Cruze
    Animals.2020; 10(9): 1692.     CrossRef
  • 7,598 View
  • 135 Download
  • 7 Web of Science
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Original Article

Genetic and Morphologic Identification of Spirometra ranarum in Myanmar
Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Sang-Hwa Lee, Woon-Mok Sohn, Sung-Jong Hong, Jong-Yil Chai, Keeseon S. Eom
Korean J Parasitol 2018;56(3):275-280.
Published online June 30, 2018
DOI: https://doi.org/10.3347/kjp.2018.56.3.275
In the present study, we identified a Spirometra species of Myanmar origin (plerocercoid) by molecular analysis using mitochondrial cox1 and nad1 genes, as well as by morphological observations of an adult tapeworm. Spargana specimens were collected from a paddy-field in Taik Kyi Township Tarkwa Village, Yangon, Myanmar in December 2017. A total of 5 spargana were obtained from 20 frogs Hoplobatrachus rugulosus; syn: Rana rugulosa (Wiegmann, 1834) or R. tigrina (Steindachner, 1867). The plerocercoids were used for experimental infection of a dog. After 4 weeks of infection, an adult tapeworm was recovered from the intestine of the dog. Morphologically, the distinct features of Spirometra sp. (Myanmar origin) relative to S. erinaceieuropaei and S. decipiens include a uterine morphology comprising posterior uterine coils that larger than the terminal uterine ball and coiling of the uteri diagonally (swirling) rather than spirally. The cox1 sequences (1,566 bp) of the Myanmar-origin Spirometra species showed 97.9% similarity to a reference sequence of S. decipiens (GenBank no. KJ599679) and 90.5% similarity to a reference sequence of S. erinaceieuropaei (GenBank no. KJ599680). Phylogenetic tree topologies were identical and presented high confidence level of values for the 3 major branches of the 3 Spirometra species in cox1 and nad1 genes. These results indicated that Myanmar-origin Spirometra species coincided with those of S. ranarum and may be considered as a valid species.

Citations

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  • A Global Review of the Zoonotic Potential and Disease Risks of Amphibian Parasites in Bullfrog Aquaculture
    Meiqi Weng, Xinhua Liu, Chenxi Zhang, Rui Shu, Andrew Wang, Haotian Zhang, Xingqiang Wang, Huirong Yang, Jinyong Zhang
    Reviews in Aquaculture.2025;[Epub]     CrossRef
  • Molecular confirmation of Spirometra mansoni (Cestoda: Diphyllobothriidae) in Javanese keelback water snake (Fowlea melanzosta) in Indonesia
    Ryanka Edila, Seongjun Choe, Mustofa Helmi Effendi, Lucia Tri Suwanti, John Yew Huat Tang
    International Journal for Parasitology: Parasites and Wildlife.2025; 28: 101150.     CrossRef
  • Deciphering the global genetic structure of Spirometra mansoni and S. erinaceieuropaei based on 28S ribosomal RNA: Insights into taxonomical revaluation and population dynamics
    Anil Kumar Nehra, Rasmita Panda, Prem Sagar Maurya, Ansu Kumari, Aman Dev Moudgil
    Parasitology Research.2025;[Epub]     CrossRef
  • Description of Spirometra asiana sp. nov. (Cestoda: Diphyllobothriidae) found in wild boars and hound dogs in Japan
    Hiroshi Yamasaki, Hiromu Sugiyama, Yasuyuki Morishima, Hirotaka Kobayashi
    Parasitology International.2024; 98: 102798.     CrossRef
  • Molecular Characterization of Spirometra erinaceieuropaei from Jungle Cat (Felis chaus) in North of Iran
    Mahboobeh Salimi, Meysam Sharifdini, Eshrat Beigom Kia
    Acta Parasitologica.2024; 69(1): 574.     CrossRef
  • Diversity and biology of Spirometra tapeworms (Cestoda: Diphyllobothriidea), zoonotic parasites of wildlife: A review
    Roman Kuchta, Anna J. Phillips, Tomáš Scholz
    International Journal for Parasitology: Parasites and Wildlife.2024; 24: 100947.     CrossRef
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    Blaine A. Mathison, Richard S. Bradbury, Bobbi S. Pritt, Romney M. Humphries
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  • Genetic and Morphological Identification of Spirometra decipiens in Snakes and Domestic Dog Found in Cuba
    Alexander Morales, Rebeca M. Laird-Pérez, Virginia Capó, Enrique Iglesias, Luis Fonte, Arturo Plascencia-Hernández, Enrique J. Calderón, Keeseon S. Eom, Yaxsier de Armas, Héctor R. Pérez-Gómez
    Pathogens.2022; 11(12): 1468.     CrossRef
  • Morphological Characteristics and Molecular Phylogenetic Evidence Support the Existence of a New Spirometra Species, Spirometra Asiana, (Cestoda: Diphyllobothriidae) in the Wild Boar
    Hiroshi Yamasaki, Hiromu Sugiyama, Yasuyuki Morishima
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    Hiroshi Yamasaki, Oranuch Sanpool, Rutchanee Rodpai, Lakkhana Sadaow, Porntip Laummaunwai, Mesa Un, Tongjit Thanchomnang, Sakhone Laymanivong, Win Pa Pa Aung, Pewpan M. Intapan, Wanchai Maleewong
    Parasitology International.2021; 80: 102181.     CrossRef
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    Blaine A. Mathison, Sarah G. H. Sapp
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  • Prevalence and molecular characterization of Spirometra erinaceieuropaei spargana in snakes in Hunan Province, China
    W. Liu, L. Tan, Y. Huang, W.C. Li, Y.S. Liu, L.C. Yang
    Journal of Helminthology.2020;[Epub]     CrossRef
  • Low prevalence of spargana infection in farmed frogs in the Yangtze River Delta of China
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    Infection, Genetics and Evolution.2020; 85: 104466.     CrossRef
  • Larval Gnathostomes and Spargana in Chinese Edible Frogs, Hoplobatrachus rugulosus, from Myanmar: Potential Risk of Human Infection
    Jong-Yil Chai, Bong-Kwang Jung, Jin-Youp Ryu, Hyun-Seung Kim, Sung-Jong Hong, Thi Thi Htoon, Htay Htay Tin, Byoung-Kuk Na, Woon-Mok Sohn
    The Korean Journal of Parasitology.2020; 58(4): 467.     CrossRef
  • Ocular Sparganosis: The First Report of Spirometra ranarum in Thailand
    Wilai Saksirisampant, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom, Buravej Assavapongpaiboon, Sunisa Sintuwong, Wasee Tulvatana
    The Korean Journal of Parasitology.2020; 58(5): 577.     CrossRef
  • Morphological and Molecular Identification of Spirometra Tapeworms (Cestoda: Diphyllobothriidae) from Carnivorous Mammals in the Serengeti and Selous Ecosystems of Tanzania
    Barakaeli Abdieli Ndosi, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Tilak Chandra Nath, Mohammed Mebarek Bia, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom
    The Korean Journal of Parasitology.2020; 58(6): 653.     CrossRef
  • Complete Sequence of the Mitochondrial Genome of Spirometra ranarum: Comparison with S. erinaceieuropaei and S. decipiens
    Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Sang-Hwa Lee, Keeseon S. Eom
    The Korean Journal of Parasitology.2019; 57(1): 55.     CrossRef
  • Broad tapeworms (Diphyllobothriidae), parasites of wildlife and humans: Recent progress and future challenges
    Tomáš Scholz, Roman Kuchta, Jan Brabec
    International Journal for Parasitology: Parasites and Wildlife.2019; 9: 359.     CrossRef
  • Genetic Identification of Spirometra erinaceieuropaei Spargana in Liaoning and Hubei Provinces, PR China
    Li He, Zheng-Ming Fang, Ting Xue, Er-Fu Zhang, Chun-Li An
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  • Mitochondrial DNA Sequence Variability of Spirometra Species in Asian Countries
    Hyeong-Kyu Jeon, Keeseon S. Eom
    The Korean Journal of Parasitology.2019; 57(5): 481.     CrossRef
  • Identity of Spirometra theileri from a Leopard (Panthera pardus) and Spotted Hyena (Crocuta crocuta) in Tanzania
    Keeseon S. Eom, Hansol Park, Dongmin Lee, Seongjun Choe, Yeseul Kang, Mohammed Mebarek Bia, Barakaeli Abdieli Ndosi, Tilak Chandra Nath, Chatanun Eamudomkarn, Julius Keyyu, Robert Fyumagwa, Simon Mduma, Hyeong-Kyu Jeon
    The Korean Journal of Parasitology.2019; 57(6): 639.     CrossRef
  • Molecular Genetic Findings of Spirometra decipiens and S. ranarum in Korea
    Hyeong-Kyu Jeon, Sun Huh, Woon-Mok Sohn, Jong-Yil Chai, Keeseon S. Eom
    The Korean Journal of Parasitology.2018; 56(4): 359.     CrossRef
  • 11,335 View
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Brief Communications

Spirometra decipiens (Cestoda: Diphyllobothriidae) Collected in A Heavily Infected Stray Cat from the Republic of Korea
Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Keeseon S. Eom
Korean J Parasitol 2018;56(1):87-91.
Published online February 28, 2018
DOI: https://doi.org/10.3347/kjp.2018.56.1.87
Morphological and molecular characteristics of spirometrid tapeworms, Spirometra decipiens, were studied, which were recovered from a heavily infected stray cat road-killed in Eumseong-gun, Chungcheongbuk-do (Province), the Republic of Korea (=Korea). A total of 134 scolices and many broken immature and mature proglottids of Spirometra tapeworms were collected from the small intestine of the cat. Morphological observations were based on 116 specimens. The scolex was 22.8-32.6 mm (27.4 mm in average) in length and small spoon-shape with 2 distinct bothria. The uterus was coiled 3-4 times, the end of the uterus was ball-shaped, and the vaginal aperture shaped as a crescent moon was closer to the cirrus aperture than to the uterine aperture. PCR amplification and direct sequencing of the cox1 target fragment (377 bp in length and corresponding to positions 769-1,146 bp of the cox1 gene) were performed using total genomic DNA extracted from 134 specimens. The cox1 sequences (377 bp) of the specimens showed 99.0% similarity to the reference sequence of S. decipiens and 89.3% similarity to the reference sequence of S. erinaceieuropaei. In the present study, we report a stray cat heavily infected with S. decipiens identified by mitochondrial cox1 sequence analysis and morphological examinations of the adult worms.

Citations

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  • Prevalence of parasitic infections in stray cats from Gimpo-si, Gyeonggi-do, Korea
    Sooji Hong, Hyejoo Shin, Seungwan Ryoo, Chung-Won Lee, Jae-Young Park, Jong-Yil Chai, Bong-Kwang Jung
    Parasites, Hosts and Diseases.2025; 63(2): 182.     CrossRef
  • Molecular Characterization of Spirometra erinaceieuropaei from Jungle Cat (Felis chaus) in North of Iran
    Mahboobeh Salimi, Meysam Sharifdini, Eshrat Beigom Kia
    Acta Parasitologica.2024; 69(1): 574.     CrossRef
  • Epidemiology, Diagnosis, and Prevention of Sparganosis in Asia
    Wei Liu, Tengfang Gong, Shuyu Chen, Quan Liu, Haoying Zhou, Junlin He, Yong Wu, Fen Li, Yisong Liu
    Animals.2022; 12(12): 1578.     CrossRef
  • The global prevalence of Spirometra parasites in snakes, frogs, dogs, and cats: A systematic review and meta‐analysis
    Milad Badri, Meysam Olfatifar, Amir KarimiPourSaryazdi, Leila Zaki, Luis Manuel Madeira de Carvalho, Majid Fasihi Harandi, Fatemeh Barikbin, Parisa Madani, Aida Vafae Eslahi
    Veterinary Medicine and Science.2022; 8(6): 2785.     CrossRef
  • First Clinical Cases of Spirometrosis in Two Cats in Korea
    Joohyung Kim, Younsung Ock, Kihwan Yang, Seongjun Choe, Kyung-Mee Park, Wan-Kyu Lee, Kyung-Chul Choi, Soochong Kim, Dongmi Kwak, Seung-Hun Lee
    The Korean Journal of Parasitology.2021; 59(2): 153.     CrossRef
  • Low prevalence of spargana infection in farmed frogs in the Yangtze River Delta of China
    Xiaoli Zhang, Rongsheng Mi, Yehua Zhang, Shijie Zhang, Tao Sun, Haiyan Jia, Yan Huang, Haiyan Gong, Xiangan Han, Zhaoguo Chen
    Infection, Genetics and Evolution.2020; 85: 104466.     CrossRef
  • Molecular Genetic Findings of Spirometra decipiens and S. ranarum in Korea
    Hyeong-Kyu Jeon, Sun Huh, Woon-Mok Sohn, Jong-Yil Chai, Keeseon S. Eom
    The Korean Journal of Parasitology.2018; 56(4): 359.     CrossRef
  • 11,845 View
  • 179 Download
  • 9 Web of Science
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Echinostoma ilocanum Infection in Two Residents of Savannakhet Province, Lao PDR
Jong-Yil Chai, Woon-Mok Sohn, Jaeeun Cho, Keeseon S. Eom, Tai-Soon Yong, Duk-Young Min, Eui-Hyug Hoang, Bounlay Phommasack, Bounnaloth Insisiengmay, Han-Jong Rim
Korean J Parasitol 2018;56(1):75-79.
Published online February 28, 2018
DOI: https://doi.org/10.3347/kjp.2018.56.1.75
Adult specimens of Echinostoma ilocanum (Garrison, 1908) Odhner, 1911 (Trematoda: Echinostomatidae) were recovered from 2 riparian people who resided along the Mekong River in Savannakhet Province, Lao PDR. In fecal examinations done by the Kato-Katz technique, they revealed echinostome eggs together with eggs of Opisthorchis viverrini (and minute intestinal fluke eggs) and hookworms. To recover the adult flukes, they were treated with praziquantel 30-40 mg/kg in a single dose and purged with magnesium salts. A total of 658 adult fluke specimens were recovered from the 2 people; 456 from case 1 and 202 from case 2. Specimens from case 1 consisted of 335 echinostomes (301 E. ilocanum and 34 species undetermined), 120 O. viverrini, and 1 Haplorchis taichui, and those from case 2 consisted of 36 E. ilocanum, 134 O. viverrini, and 32 H. taichui. Thus, the number of E. ilocanum specimens was 337 in total (average per person, 168.5). From this study, it is suggested that foodborne intestinal flukes and liver flukes are highly prevalent along the Mekong River in Savannakhet Province. The present report describes for the first time human infections with E. ilocanum in Lao PDR.

Citations

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  • Development and utilization of a visual loop-mediated isothermal amplification coupled with a lateral flow dipstick (LAMP-LFD) assay for rapid detection of Echinostomatidae metacercaria in edible snail samples
    Wasin Panich, Phonkawin Jaruboonyakorn, Awika Raksaman, Thanawan Tejangkura, Thapana Chontananarth
    International Journal of Food Microbiology.2024; 418: 110732.     CrossRef
  • Neglected food-borne trematodiases: echinostomiasis and gastrodiscoidiasis
    Rafael Toledo, María Álvarez-Izquierdo, J. Guillermo Esteban, Carla Muñoz-Antoli
    Parasitology.2022; 149(10): 1319.     CrossRef
  • General overview of the current status of human foodborne trematodiasis
    Jong-Yil Chai, Bong-Kwang Jung
    Parasitology.2022; 149(10): 1262.     CrossRef
  • Foodborne intestinal flukes: A brief review of epidemiology and geographical distribution
    Jong-Yil Chai, Bong-Kwang Jung
    Acta Tropica.2020; 201: 105210.     CrossRef
  • Echinostoma aegyptica (Trematoda: Echinostomatidae) Infection in Five Riparian People in Savannakhet Province, Lao PDR
    Jong-Yil Chai, Bong-Kwang Jung, Taehee Chang, Hyejoo Shin, Woon-Mok Sohn, Keeseon S. Eom, Tai-Soon Yong, Duk-Young Min, Bounlay Phammasack, Bounnaloth Insisiengmay, Han-Jong Rim
    The Korean Journal of Parasitology.2020; 58(1): 67.     CrossRef
  • Echinostoma mekongi n. sp. (Digenea: Echinostomatidae) from Riparian People along the Mekong River in Cambodia
    Jaeeun Cho, Bong-Kwang Jung, Taehee Chang, Woon-Mok Sohn, Muth Sinuon, Jong-Yil Chai
    The Korean Journal of Parasitology.2020; 58(4): 431.     CrossRef
  • Echinochasmus caninus n. comb. (Trematoda: Echinostomatidae) Infection in Eleven Riparian People in Khammouane Province, Lao PDR
    Jong-Yil Chai, Taehee Chang, Bong-Kwang Jung, Hyejoo Shin, Woon-Mok Sohn, Keeseon S. Eom, Tai-Soon Yong, Duk-Young Min, Bounlay Phammasack, Bounnaloth Insisiengmay, Han-Jong Rim
    The Korean Journal of Parasitology.2019; 57(4): 451.     CrossRef
  • 10,231 View
  • 177 Download
  • 11 Web of Science
  • Crossref
New Record of Aspidogaster ijimai Kawamura, 1913 (Trematoda: Aspidogastridae) from Cyprinus carpio in Korea
Dongmin Lee, Hansol Park, Seongjun Choe, Yeseul Kang, Hyeong-Kyu Jeon, Keeseon S. Eom
Korean J Parasitol 2017;55(5):575-578.
Published online October 31, 2017
DOI: https://doi.org/10.3347/kjp.2017.55.5.575
Aspidogastrid trematodes (Subclass Aspidogastrea) are a relatively small group with a characteristic adhesive disc and parasitize in a variety of cold-blooded hosts. Until now, only 2 species in the genus Cotylaspis, i.e., C. coreensis and C. sinensis, have been reported as the aspidogastrid trematode in the Republic of Korea (=Korea). In the present study, we intended to describe a species of aspidogastrids collected from the small intestine of the common carp, Cyprinus carpio, in a faunistic point of view. Total 51 specimens were collected from a carp caught in Nakdong-gang (River) on May 2015. Some of them were prepared as the specimens for light microscopic observations, and some others were prepared for SEM. They were slightly elongated without head lobes, 2,432×840 μm in average size, and had characteristic adhesive discs with 4 rows and 46 alveoli in average. The ovary was reniform and was located in the posterior-upper part of the body. The single testis was larger than the ovary and was located below the ovary. The uterus was coiled containing numerous eggs and distributed in the posterior 2/3 of the body. The vitellaria were follicular, and distributed from the mid-level of testis to near the posterior end. The morphological characters with dimensions of our specimens were closely identical with those of Aspidogaster ijimai previously described. A new aspidogastrid is added among the Korean trematode fauna by the present study.

Citations

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  • The complete mitochondrial genome of Aspidogaster ijimai (Platyhelminthes: Trematoda: Aspidogastrea): gene content and phylogenetic inference
    D. A. Solodovnik, D. M. Atopkin, A. A. Semenchenko, M. Urabe, S. G. Sokolov
    Invertebrate Zoology.2025; 22(3): 411.     CrossRef
  • Redescription of Aspidogaster limacoides Diesing, 1834 (Aspidogastrea: Aspidogastridae) from freshwater fishes of northern Germany
    Jaydipbhai Suthar, Sarah Al-Jufaili, Rodney A. Bray, Marcus Frank, Stefan Theisen, Harry W. Palm
    Parasitology Research.2021; 120(10): 3405.     CrossRef
  • Redescription and supplementary molecular characteristics of Aspidogaster ijimai Kawamura, 1915 (Trematoda, Aspidogastrea, Aspidogastridae), a parasite of Cyprinus carpio Linnaeus, 1758 s. lato (Actinopterygii) and freshwater bivalves in East Asia
    S.G. Sokolov, D.M. Atopkin, M. Urabe
    Parasitology International.2019; 71: 167.     CrossRef
  • 8,102 View
  • 157 Download
  • 2 Web of Science
  • Crossref
Artyfechinostomum malayanum: Metacercariae Encysted in Pila sp. Snails Purchased from Phnom Penh, Cambodia
Woon-Mok Sohn, Tai-Soon Yong, Keeseon S. Eom, Muth Sinuon, Hoo-Gn Jeoung, Jong-Yil Chai
Korean J Parasitol 2017;55(3):341-345.
Published online June 30, 2017
DOI: https://doi.org/10.3347/kjp.2017.55.3.341
The metacercariae of Artyfechinostomum malayanum (Leiper, 1911) Mendheim, 1943 were discovered in Pila sp. snails purchased from a market in Phnom Penh, Cambodia. They were isolated from the snails using the artificial digestion technique and were orally fed to 2 hamsters, 1 rat, and 2 mice to obtain the adult flukes. The metacercariae were round, 145-165 μm in diameter, having a cyst wall of 6-10 μm in thickness, a head collar and collar spines, and characteristic features of excretory granules. Adult flukes were recovered in the small intestines of the animals at days 14 and 32 post infection and were morphologically observed using a light microscope and a scanning electron microscope. They were plump or elongated, ventrally curved, 6.0-8.1×1.6-2.0 mm in size, and characterized by the head collar bearing 43 collar spines, including 5 end group ones on each side, a long cirrus sac extending beyond the posterior margin of the ventral sucker, a submedian ovary, and 2 deeply lobed testes. Eggs in uteri were operculate, ovoid to ellipsoid, and 120-135×68-75 μm in size. In scanning electron microscopy, the head collar was prominent with collar spines looking like horns. Scale-like tegumental spines were densely distributed on the ventral surface between the head collar and ventral sucker. Sensory papillae were distributed mainly on the tegument around suckers. By this study, it has been first confirmed that the life cycle of A. malayanum exists in Cambodia.

Citations

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  • The ribosomal transcription units of five echinostomes and their taxonomic implications for the suborder Echinostomata (Trematoda: Platyhelminthes)
    Thanh Hoa Le, Linh Thi Khanh Pham, Dong Van Quyen, Khue Thi Nguyen, Huong Thi Thanh Doan, Weerachai Saijuntha, David Blair
    Parasitology Research.2024;[Epub]     CrossRef
  • Biological Hazards and Indicators Found in Products of Animal Origin in Cambodia from 2000 to 2022: A Systematic Review
    Shwe Phue San, Rortana Chea, Delia Grace, Kristina Roesel, Sothyra Tum, Stephen Young, Tumnoon Charaslertrangsi, Nazanin Zand, Shetty Seetharama Thombathu, Ra Thorng, Leab Kong, Kuok Fidero, Linda Nicolaides
    International Journal of Environmental Research and Public Health.2024; 21(12): 1621.     CrossRef
  • Mitophylogenomics of the zoonotic fluke Echinostoma malayanum confirms it as a member of the genus Artyfechinostomum Lane, 1915 and illustrates the complexity of Echinostomatidae systematics
    Linh Thi Khanh Pham, Weerachai Saijuntha, Scott P. Lawton, Thanh Hoa Le
    Parasitology Research.2022; 121(3): 899.     CrossRef
  • High diversity of trematode metacercariae that parasitize freshwater gastropods in Bangkok, Thailand, and their infective situations, morphologies and phylogenetic relationships
    Pichit Wiroonpan, Thapana Chontananarth, Jong-Yil Chai, Watchariya Purivirojkul
    Parasitology.2022; 149(7): 913.     CrossRef
  • General overview of the current status of human foodborne trematodiasis
    Jong-Yil Chai, Bong-Kwang Jung
    Parasitology.2022; 149(10): 1262.     CrossRef
  • Foodborne intestinal flukes: A brief review of epidemiology and geographical distribution
    Jong-Yil Chai, Bong-Kwang Jung
    Acta Tropica.2020; 201: 105210.     CrossRef
  • 10,986 View
  • 153 Download
  • 7 Web of Science
  • Crossref

Case Reports

Canine Wound Myiasis Caused by Lucilia sericata (Diptera: Calliphoridae) in Korea
Seongjun Choe, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Hakhyun Kim, Ji-Houn Kang, Cha-Ho Jee, Keeseon S. Eom
Korean J Parasitol 2016;54(5):667-671.
Published online October 31, 2016
DOI: https://doi.org/10.3347/kjp.2016.54.5.667
Myiasis is a relatively common infection of animals kept as pets, although only 1 case of canine myiasis has been described so far in the Republic of Korea. In the present study, we report an additional case of canine wound myiasis with identification of its causative agent, Lucilia sericata. An 8-year-old male Siberian husky dog was referred with anorexia, vomiting, and diarrhea to the Chungbuk National University Veterinary Medical Center, Cheongju-si (city), Chungcheongbuk-do (province), Korea in July 2013. Physical examination indicated the patient had a deep wound filled with a maggot swarm as a left gluteal lesion. A total of 216 maggots were removed by forceps, and the wounded area was sponged with gauzes and disinfected with 70% alcohol and a povidone-iodine solution. After daily care and suturing the wound, the patient was discharged at day 19 after admission. Recovered worms possessed morphological characteristics similar to those of L. sericata, namely, a sub-cylindrical body with 6-8 lobed anterior spiracles, round shaped with a button surrounded by a peritremal ring with no gaps, and similar distances between dorsal, median, and outer papillae of the 12th segment. Additionally, cox1 partial sequences (528 bp) obtained in the present study showed 100% identity with those of L. sericata (GenBank no. KT272854.1). L. sericata is indicated as a pathogen of myiasis infection not only in humans, but also in animals kept as pets in Korea.

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    Aws Mohammed, Thamer Alkhafaji, Haydar Al-Rubaye, Moustafa Al-Araby, Salah Abu-Elwafa, Ibrahim Abbas
    Tropical Animal Health and Production.2025;[Epub]     CrossRef
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    Daniel C. G. Metz, Kelly L. Weinersmith, Alexis S. Beagle, Rudra M. Dixit, Christina G. Fragel, Clayton E. Cressler
    Ecology Letters.2025;[Epub]     CrossRef
  • Incidence of Furuncular Myiasis due to Cordylobia anthropophaga (Blanchard, 1872) Larvae Infestation and Associated Risk Factors on Dogs in Ilorin Metropolis, North Central, Nigeria
    Musa Rabiu, Ridwan Usman Adekola, Shola David Ola-Fadunsin, Isau Aremu Ganiyu, Miftah Olalekan Adeleke, Idiat Modupe Sanda, Ghali-Mohammed Ibraheem, Isyaku Abdulmajeed
    UMYU Scientifica.2025; 4(1): 408.     CrossRef
  • Gut Microbiome Characterisation of Chrysomya megacephala: Isolation, Identification, Antibiotic Profiling, and Initial Documentation of Leclercia adecarboxylata from the Fly
    Balu M. Nair, Majesh Tomson
    Journal of Pure and Applied Microbiology.2024; 18(4): 2446.     CrossRef
  • Entomologia Forense e Medicina Veterinária Legal: o primeiro estudo multidisciplinar de caso de miíase em cão doméstico pela Polícia Científica de Santa Catarina
    Victor Wilson Botteon, Igor Salles Perecin, Anderson Gaedke, Nicole Goumbieski
    Revista Brasileira de Criminalística.2024; 13(5): 74.     CrossRef
  • Eight cases of canine thelaziosis found in two localities in Korea
    Seongjun Choe, Sunmin Kim, Tilak Chandra Nath, Jeong-Ho Kim
    Parasites, Hosts and Diseases.2023; 61(3): 325.     CrossRef
  • Morphological studies of fly puparia (Diptera: Calliphoridae) in the soil from a Joseon Dynasty grave in Korea
    In-Yong Lee, Ju Yeong Kim, Jung-Min Park, Ji Ho Seo, Bo-Young Jeon, Tai-Soon Yong, Min Seo
    Parasites, Hosts and Diseases.2023; 61(4): 471.     CrossRef
  • Cutaneous myiasis in cats and dogs: Cases, predisposing conditions and risk factors
    Marco Pezzi, Chiara Scapoli, Milvia Chicca, Marilena Leis, Maria Gabriella Marchetti, Carlo Nicola Francesco Del Zingaro, Chiara Beatrice Vicentini, Elisabetta Mamolini, Annunziata Giangaspero, Teresa Bonacci
    Veterinary Medicine and Science.2021; 7(2): 378.     CrossRef
  • The Growth Model of Forensically Important Lucilia sericata (Meigen) (Diptera: Calliphoridae) in South Korea
    Sang Eon Shin, Ji Hye Park, Su Jin Jeong, Seong Hwan Park
    Insects.2021; 12(4): 323.     CrossRef
  • 11,758 View
  • 226 Download
  • 11 Web of Science
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A Case of Chaunocephalosis by Chaunocephalus ferox (Digenea: Echinostomatidae) in an Oriental White Stork, Ciconia boyciana, in Korea
Seongjun Choe, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Youngsun Lee, Ki-Jeong Na, Shi-Ryong Park, Keeseon S. Eom
Korean J Parasitol 2016;54(5):659-665.
Published online October 31, 2016
DOI: https://doi.org/10.3347/kjp.2016.54.5.659
We intended to describe a case of chaunocephalosis and morphological characteristics of its causative agent, Chaunocephalus ferox, recovered from an oriental white stork, Ciconia boyciana, in the Republic of Korea. An oriental white stork was referred to the Wildlife Center of Chungbuk in Korea in February 2014 for severe depression with cachexia and it died the next day. At necropsy, the stomach was severely expanded and 7 thick-walled nodules were observed in the upper part of the intestine. Although the stomach was filled with full of foreign materials, the intestine was almost empty. The nodules were globular and total 9 flukes were recovered. They were 8,030-8,091 μm in length and 3,318-3,333 μm in maximum width. Because the flukes had bulbous forebody with short narrow subcylindrical hindbody, 27 collar spines, and vitelline follicles not reaching to the posterior end, the specimens were identified as being C. ferox. The cyst formation induced thickening of the intestinal wall with narrowing of the lumen that could have contributed to the gastric impaction to the death of the host. This is the first described case of chaunocephalosis and its causative agent C. ferox found from an oriental white stork in Korea.

Citations

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  • Chaunocephalus ferox (Digenea: Echinostomatidae): a potential threat to the health of Oriental stork (Ciconia boyciana)
    Mengchao Zhou, Mingyuan Yu, Mengqiu Liu, Hongrui Liang, Mengru Zhao, Yaxian Lu, Siyuan Qin, Xiaotian Zhang, Hongyan Yu, Hang Tian, Wanting Li, Feiluran Maimaiti, Weiyan Yin, Lei Han, Lihong Tian, Yu Xu, Zhijun Hou
    European Journal of Wildlife Research.2025;[Epub]     CrossRef
  • Complete mitochondrial genome and phylogenetic implications of Chaunocephalus ferox (Digenea: Echinostomatidae), a critical pathogen for Oriental Stork conservation
    Mengchao Zhou, Hongrui Liang, Zhiyou Lv, Xiaotian Zhang, Yang Liu, Yaxian Lu, Hongyan Yu, Hang Tian, Lei Han, Yu Xu, Zhijun Hou
    International Journal for Parasitology: Parasites and Wildlife.2025; 28: 101129.     CrossRef
  • Morphological and Molecular Study on Trematodes of Storks (Ciconia ciconia and C. nigra) from Turkey
    Mehmet Öztürk, Şinasi Umur
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    Byungkwan Oh, Myeon-Sik Yang, Dong-Soo Ha, Su-Kyung Kim, Hyun Jong Park, Bumseok Kim, Chae Woong Lim, Sang-Ik Oh
    Journal of Veterinary Clinics.2024; 41(5): 323.     CrossRef
  • A case of nodular enteritis due to Chaunocephalus ferox in a white stork (Ciconia ciconia) in Bulgaria
    P. T. Iliev, K. Dimitrov, A. Ivanov
    BULGARIAN JOURNAL OF VETERINARY MEDICINE.2023; 26(4): 660.     CrossRef
  • Flying across Europe: the case of the spread of Chaunocephalus ferox on a black stork (Ciconia nigra)
    M. Gonzálvez, C. Muñoz-Hernández, A. Gómez de Ramón, A. Buendía, F. Escribano, C. Martínez-Carrasco
    Journal of Helminthology.2022;[Epub]     CrossRef
  • Infections with Digenetic Trematode Metacercariae in Freshwater Fishes from Two Visiting Sites of Migratory Birds in Gyeongsangnam-do, Republic of Korea
    Woon-Mok Sohn, Byoung-Kuk Na
    The Korean Journal of Parasitology.2019; 57(3): 273.     CrossRef
  • Infections of Two Isthmiophora Species (Digenea: Echinostomatidae) in Wild Mammals from Republic of Korea with Their Morphological Descriptions
    Seongjun Choe, Ki-Jeong Na, Youngjun Kim, Dong-Hyuk Jeong, Jeong-Jin Yang, Keeseon S. Eom
    The Korean Journal of Parasitology.2019; 57(6): 647.     CrossRef
  • New Definitive Hosts and Differential Body Indices of Isthmiophora hortensis (Digenea: Echinostomatidae)
    Woon-Mok Sohn, Byoung-Kuk Na, Sung-Shik Shin
    The Korean Journal of Parasitology.2017; 55(3): 287.     CrossRef
  • Echinostoma macrorchis (Digenea: Echinostomatidae): Metacercariae in Cipangopaludina chinensis malleata Snails and Adults from Experimental Rats in Korea
    Woon-Mok Sohn, Byoung-Kuk Na
    The Korean Journal of Parasitology.2017; 55(5): 541.     CrossRef
  • 8,421 View
  • 182 Download
  • 9 Web of Science
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Original Articles

Catenotaenia dendritica (Cestoda: Catenotaeniidae) and Three Ectoparasite Species in the Red Squirrel, Sciurus vulgaris, from Cheongju, Korea
Seongjun Choe, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Youngsun Lee, Ki-Jeong Na, In-Yong Lee, Keeseon S. Eom
Korean J Parasitol 2016;54(4):509-518.
Published online August 31, 2016
DOI: https://doi.org/10.3347/kjp.2016.54.4.509
Parasites are recorded from the red squirrel, Sciurus vulgaris, from Cheongju, the Republic of Korea. A total of 5 road-killed squirrels were thoroughly examined for internal and external parasites from November 2011 to May 2014. Total 4 parasite species, including 1 tapeworm and 3 ectoparasite species were recovered. They were morphologically identified as Catenotaenia dendritica (Cestoda: Catenotaeniidae), Hirstionyssus sciurinus, Leptotrombidium pallidum, and Ceratophyllus (Monopsyllus) indages. Among them, C. dendritica and H. sciurinus are recorded for the first time in the Korean parasite fauna. In addition, the possibility that the red squirrel could act as a reservoir host for a zoonotic disease like tsutsugamushi disease with L. pallidum as its vector has been raised.

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  • First assessment of ectoparasite prevalence in Apennine populations of Eurasian red squirrel: does habitat fragmentation affect parasite presence?
    Marcello Franchini, Giuseppe Mazza, Emiliano Mori
    Ethology Ecology & Evolution.2022; 34(5): 497.     CrossRef
  • Zoonotic Pathogens in Wildlife Traded in Markets for Human Consumption, Laos
    Pruksa Nawtaisong, Matthew T. Robinson, Khongsy Khammavong, Phonesavanh Milavong, Audrey Rachlin, Sabine Dittrich, Audrey Dubot-Pérès, Malavanh Vongsouvath, Paul F. Horwood, Philippe Dussart, Watthana Theppangna, Bounlom Douangngeum, Amanda E. Fine, Mathi
    Emerging Infectious Diseases.2022; 28(4): 860.     CrossRef
  • 10,817 View
  • 204 Download
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Molecular Detection of Spirometra decipiens in the United States
Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Woon-Mok Sohn, Keeseon S. Eom
Korean J Parasitol 2016;54(4):503-507.
Published online August 31, 2016
DOI: https://doi.org/10.3347/kjp.2016.54.4.503
The genus Spirometra belongs to the family Diphyllobothriidae and order Pseudophyllidea, and includes intestinal parasites of cats and dogs. In this study, a plerocercoid labeled as Spirometra mansonoides from the USA was examined for species identification and phylogenetic analysis using 2 complete mitochondrial genes, cytochrome c oxidase I (cox1) and NADH dehydrogenase subunit 3 (nad3). The cox1 sequences (1,566 bp) of the plerocercoid specimen (USA) showed 99.2% similarity to the reference sequences of the plerocercoid of Korean Spirometra decipiens (GenBank no. KJ599679), and 99.1% similarity in regard to nad3 (346 bp). Phylogenetic tree topologies generated using 4 analytical methods were identical and showed high confidence levels with bootstrap values of 1.00, 100%, 100%, and 100% for Bayesian inference (BI), maximum-likelihood (ML), neighbor-joining (NJ), and maximum parsimony (MP) methods, respectively. Representatives of Diphyllobothrium and Spirometra species formed a monophyletic group, and the sister-genera status between these species was well supported. Trapezoic proglottids in the posterior 1/5 region of an adult worm obtained from an experimentally infected cat were morphologically examined. The outer uterine loop of the uterus coiling characteristically consisted of 2 complete turns. The results clearly indicated that the examined Spirometra specimen from the USA matched to S. decipiens very well, and indicated possible presence of the life cycle of this species in this region.

Citations

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  • Molecular confirmation of Spirometra mansoni (Cestoda: Diphyllobothriidae) in Javanese keelback water snake (Fowlea melanzosta) in Indonesia
    Ryanka Edila, Seongjun Choe, Mustofa Helmi Effendi, Lucia Tri Suwanti, John Yew Huat Tang
    International Journal for Parasitology: Parasites and Wildlife.2025; 28: 101150.     CrossRef
  • Diversity and biology of Spirometra tapeworms (Cestoda: Diphyllobothriidea), zoonotic parasites of wildlife: A review
    Roman Kuchta, Anna J. Phillips, Tomáš Scholz
    International Journal for Parasitology: Parasites and Wildlife.2024; 24: 100947.     CrossRef
  • Epidemiology, Diagnosis, and Prevention of Sparganosis in Asia
    Wei Liu, Tengfang Gong, Shuyu Chen, Quan Liu, Haoying Zhou, Junlin He, Yong Wu, Fen Li, Yisong Liu
    Animals.2022; 12(12): 1578.     CrossRef
  • Genetic and Morphological Identification of Spirometra decipiens in Snakes and Domestic Dog Found in Cuba
    Alexander Morales, Rebeca M. Laird-Pérez, Virginia Capó, Enrique Iglesias, Luis Fonte, Arturo Plascencia-Hernández, Enrique J. Calderón, Keeseon S. Eom, Yaxsier de Armas, Héctor R. Pérez-Gómez
    Pathogens.2022; 11(12): 1468.     CrossRef
  • Insight into One Health Approach: Endoparasite Infections in Captive Wildlife in Bangladesh
    Tilak Chandra Nath, Keeseon S. Eom, Seongjun Choe, Shahadat Hm, Saiful Islam, Barakaeli Abdieli Ndosi, Yeseul Kang, Mohammed Mebarek Bia, Sunmin Kim, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee
    Pathogens.2021; 10(2): 250.     CrossRef
  • A Case of Sparganosis Caused by Spirometra decipiens on the Femur
    Shoko YOGO, Sakurako IMAMURA, Kiko NAGAI, Kayo HARADA, Eiji NAGAYASU, Haruhiko MARUYAMA, Kazunori URABE
    Nishi Nihon Hifuka.2021; 83(5): 453.     CrossRef
  • Morphological Features and Structural Analysis of Plerocercoids of Spirometra erinaceieuropaei (Cestoda: Diphyllobothriidae) from European Pine Marten, Martes martes (Mammalia: Mustelidae) in Ukraine
    Nataliya Yu. Rubtsova, Richard A. Heckmann
    Comparative Parasitology.2020; 87(1): 109.     CrossRef
  • Ocular Sparganosis: The First Report of Spirometra ranarum in Thailand
    Wilai Saksirisampant, Chatanun Eamudomkarn, Hyeong-Kyu Jeon, Keeseon S. Eom, Buravej Assavapongpaiboon, Sunisa Sintuwong, Wasee Tulvatana
    The Korean Journal of Parasitology.2020; 58(5): 577.     CrossRef
  • Spirometra decipiens (Cestoda: Diphyllobothriidae) Collected in A Heavily Infected Stray Cat from the Republic of Korea
    Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Keeseon S. Eom
    The Korean Journal of Parasitology.2018; 56(1): 87.     CrossRef
  • Molecular cloning, antiserum preparation and expression analysis during head regeneration of $$upalpha $$ α
    Wen-Fang Dong, Hang Zhang, Ru-Meng Wang, Hong-Chun Pan
    Journal of Genetics.2018; 97(4): 911.     CrossRef
  • Human Sparganosis in Korea
    Jeong-Geun Kim, Chun-Seob Ahn, Woon-Mok Sohn, Yukifumi Nawa, Yoon Kong
    Journal of Korean Medical Science.2018;[Epub]     CrossRef
  • 11,988 View
  • 207 Download
  • 13 Web of Science
  • Crossref
Two Echinostome Species, Pegosomum bubulcum and Nephrostomum ramosum (Digenea: Echinostomatidae), from an Eastern Cattle Egret, Bubulcus ibis coromandus, in Republic of Korea
Seongjun Choe, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Youngsun Lee, Eunju Kim, Ki-Jeong Na, Keeseon S. Eom
Korean J Parasitol 2016;54(4):485-496.
Published online August 31, 2016
DOI: https://doi.org/10.3347/kjp.2016.54.4.485
We describe 2 echinostome species recovered from an Eastern cattle egret, Bubulcus ibis coromandus, from Cheongju-si (city), Chungcheongbuk-do (province), Korea. Total 72 Pegosomum bubulcum specimens were recovered from the bile duct. They were 7,566×2,938 μm in average size and had 27 collar spines with vitelline extension from anterior 1/3 level of the esophagus to mid-level of the posterior testis as characteristic features. Total 9 specimens of Nephrostomum ramosum were recovered in the small intestines of the bird. They were ribbon-shaped, 11,378×2,124 μm in average size, and morphologically variable in some organs, i.e., the number of collar spines (47-50), the shape of ovary and testes, and the extension of vitelline follicles. These morphological variations observed in a single host indicated that these features are not critical for the classification of Nephrostomum species and thus were reconsidered taxonomically as synonym of N. ramosum. This study is the first report documenting and describing both flukes and their associated genera in Korea.

Citations

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  • Filling the void: Morphological and molecular phylogenetic analyses of helminths assemblage from the Egyptian egret Bubulcus ibis
    Nada A. Ibrahim, Ismail M. Shalaby, Mahi A. Ghobashy, Azza A. Taeleb, Elham A. Elkhawass
    Parasitology International.2025; 104: 102972.     CrossRef
  • 18S rRNA gene metabarcoding for investigation of gastrointestinal parasite diversity in great cormorants
    Subin Lee, Badriah Alkathiri, Chang Hyeon Lee, Heon Woo Lee, Dong-Hyuk Jeong, Ju Yeong Kim, Seongjun Choe, Seung-Hun Lee
    Scientific Reports.2025;[Epub]     CrossRef
  • Molecular and morphological support for the synonymy of Nephrostomum and Patagifer: discovery of new species and broad geographic connections
    María G. Díaz González, Danimar López-Hernández, Vasyl V. Tkach, Fabiana Drago, Fred D. Chibwana, Martina R. Laidemitt, Christopher A. Blanar, Verónica Núñez, Mariano Dueñas Díaz, Luis A. Gomez-Puerta, Sean A. Locke
    International Journal for Parasitology.2025;[Epub]     CrossRef
  • Infections with Digenetic Trematode Metacercariae in Freshwater Fishes from Two Visiting Sites of Migratory Birds in Gyeongsangnam-do, Republic of Korea
    Woon-Mok Sohn, Byoung-Kuk Na
    The Korean Journal of Parasitology.2019; 57(3): 273.     CrossRef
  • Infections of Two Isthmiophora Species (Digenea: Echinostomatidae) in Wild Mammals from Republic of Korea with Their Morphological Descriptions
    Seongjun Choe, Ki-Jeong Na, Youngjun Kim, Dong-Hyuk Jeong, Jeong-Jin Yang, Keeseon S. Eom
    The Korean Journal of Parasitology.2019; 57(6): 647.     CrossRef
  • New Definitive Hosts and Differential Body Indices of Isthmiophora hortensis (Digenea: Echinostomatidae)
    Woon-Mok Sohn, Byoung-Kuk Na, Sung-Shik Shin
    The Korean Journal of Parasitology.2017; 55(3): 287.     CrossRef
  • Echinostoma macrorchis (Digenea: Echinostomatidae): Metacercariae in Cipangopaludina chinensis malleata Snails and Adults from Experimental Rats in Korea
    Woon-Mok Sohn, Byoung-Kuk Na
    The Korean Journal of Parasitology.2017; 55(5): 541.     CrossRef
  • 11,072 View
  • 225 Download
  • 6 Web of Science
  • Crossref

Brief Communications

New Record of Schistorophus cirripedesmi (Nematoda: Acuariidae) from a Bar-Tailed Godwit, Limosa lapponica baueri (Charadriformes: Scolopacidae) in Korea
Seongjun Choe, Hyun Kim, Junsik Lim, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Heejong Kim, Youngjun Kim, Keeseon S. Eom
Korean J Parasitol 2016;54(3):349-355.
Published online June 30, 2016
DOI: https://doi.org/10.3347/kjp.2016.54.3.349
In July 2014, a nematode species, Schistorophus cirripedesmi Rhizhikov and Khokhlova, 1964, was recovered from a bar-tailed godwit, Limosa lapponica baueri that was stored in a -20˚C freezer in the Chungnam Wild Animal Rescue Center. The bird was collected in 2012 from the coastal region of Pyeongtaek-si (City), Gyeonggi-do (Province) in the Republic of Korea, although the exact date is not clear. At necropsy, 9 nematodes were found in the gizzard of the bird. The parasites had 4 horn-like cephalic cuticular ornamentations. After morphometric comparison and morphological observations, including scanning electron microscopy, the nematodes were identified as S. cirripedesmi. This is the first description of a nematode species in a shorebird in Korea. This is also the first time this genus and species have been found in Korea.
  • 8,754 View
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Three Nematode Species Recovered from Terrestrial Snakes in Republic of Korea
Seongjun Choe, Junsik Lim, Hyun Kim, Youngjun Kim, Heejong Kim, Dongmin Lee, Hansol Park, Hyeong-Kyu Jeon, Keeseon S. Eom
Korean J Parasitol 2016;54(2):205-213.
Published online April 30, 2016
DOI: https://doi.org/10.3347/kjp.2016.54.2.205
The majority of parasitological studies of terrestrial snakes in Korea have focused on zoonotic parasites. However, in the present study, we describe 3 unrecorded nematode species recovered from 5 species of snakes (n=6) in Korea. The examined snakes, all confiscated from illegal hunters, were donated by the Chungnam Wild Animal Rescue Center and Korean Broadcasting System in July 2014 and February 2015. Light and scanning electron microscopies on the shapes of spicules that are either bent or straight (kalicephalids) and the presence of the intestinal cecum (ophidascarids) figured out 3 nematodes; Kalicephalus brachycephalus Maplestone, 1931, Kalicephalus sinensis Hs?, 1934, and Ophidascaris excavata Hs? and Hoeppli, 1934. These 3 species of nematode faunas are recorded for the first time in Korea.

Citations

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  • An update on the conservation status and ecology of Korean terrestrial squamates
    Daniel Macias, Yucheol Shin, Amaël Borzée
    Journal for Nature Conservation.2021; 60: 125971.     CrossRef
  • The mitochondrial genome sequence analysis of Ophidascaris baylisi from the Burmese python (Python molurus bivittatus)
    Qi Zhao, Asmaa M.I. Abuzeid, Long He, Tingting Zhuang, Xiu Li, Jumei Liu, Shilan Zhu, Xiaoyu Chen, Guoqing Li
    Parasitology International.2021; 85: 102434.     CrossRef
  • Morphologic and morphometric characteristics of ascaroid worm, Ophidascaris piscatori in Xenochrophis piscator snake in Sidoarjo, Indonesia
    Lucia Tri Suwanti, Inggarsetya Syah Audini, Setiawan Koesdarto, Emmanuel Djoko Poetranto
    Veterinary World.2018; 11(8): 1159.     CrossRef
  • 12,266 View
  • 215 Download
  • 3 Web of Science
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Original Article

Genetic Identification of Spirometra decipiens Plerocercoids in Terrestrial Snakes from Korea and China
Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Kyu-Heon Kim, Woon- Mok Sohn, Keeseon S. Eom
Korean J Parasitol 2016;54(2):181-185.
Published online April 30, 2016
DOI: https://doi.org/10.3347/kjp.2016.54.2.181
Human sparganosis is a zoonotic disease caused by infection with larval forms (procercoid/plerocercoid) of Spirometra spp. The purpose of this study was to identify Spirometra spp. of infected snakes using a multiplex PCR assay and phylogenetic analysis of mitochondrial DNA sequence data from the spargana of terrestrial snakes obtained from Korea and China. A total of 283 snakes were obtained that included 4 species of Colubridae comprising Rhabdophis tigrinus tigrinus (n=150), Dinodon rufozonatum rufozonatum (n=64), Elaphe davidi (n=2), and Elaphe schrenkii (n=7), and 1 species of Viperidae, Agkistrodon saxatilis (n=60). The snakes were collected from the provinces of Chungbuk, Chungnam, and Gyeongbuk in Korea (n=161), and from China (n=122). The overall infection rate with spargana was 83% (235/283). The highest was recorded for D. rufozonatum rufozonatum (100%), followed by A. saxatilis (85%) and R. tigrinus tigrinus (80%), with a negative result for E. davidi (0%) and E. schrenkii (0%). The sequence identities between the spargana from snakes (n=50) and Spirometra erinaceieuropaei (KJ599680) or S. decipiens (KJ599679) control specimens were 90.8% and 99.2%, respectively. Pairwise genetic distances between spargana (n=50) and S. decipiens ranged from 0.0080 to 0.0107, while those between spargana and S. erinaceieuropaei ranged from 0.1070 to 0.1096. In this study, all of the 904 spargana analyzed were identified as S. decipiens either by a multiplex PCR assay (n=854) or mitochondrial cox1 sequence analysis (n=50).

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  • Molecular Characterization of Spirometra erinaceieuropaei from Jungle Cat (Felis chaus) in North of Iran
    Mahboobeh Salimi, Meysam Sharifdini, Eshrat Beigom Kia
    Acta Parasitologica.2024; 69(1): 574.     CrossRef
  • Molecular Characterization and Phylogenetic Analysis of Spirometra Tapeworms from Snakes in Hunan Province
    Shu-Yu Chen, Teng-Fang Gong, Jun-Lin He, Fen Li, Wen-Chao Li, Li-Xing Xie, Xin-Rui Xie, Yi-Song Liu, Ying-Fang Zhou, Wei Liu
    Veterinary Sciences.2022; 9(2): 62.     CrossRef
  • Epidemiology and Genetic Diversity of Spirometra Tapeworm Isolates from Snakes in Hunan Province, China
    Tengfang Gong, Xiaoyi Su, Fen Li, Junlin He, Shuyu Chen, Wenchao Li, Xinrui Xie, Yisong Liu, Xi Zhang, Wei Liu
    Animals.2022; 12(9): 1216.     CrossRef
  • Epidemiology, Diagnosis, and Prevention of Sparganosis in Asia
    Wei Liu, Tengfang Gong, Shuyu Chen, Quan Liu, Haoying Zhou, Junlin He, Yong Wu, Fen Li, Yisong Liu
    Animals.2022; 12(12): 1578.     CrossRef
  • Spirometra species from Asia: Genetic diversity and taxonomic challenges
    Hiroshi Yamasaki, Oranuch Sanpool, Rutchanee Rodpai, Lakkhana Sadaow, Porntip Laummaunwai, Mesa Un, Tongjit Thanchomnang, Sakhone Laymanivong, Win Pa Pa Aung, Pewpan M. Intapan, Wanchai Maleewong
    Parasitology International.2021; 80: 102181.     CrossRef
  • Genome of the fatal tapeworm Sparganum proliferum uncovers mechanisms for cryptic life cycle and aberrant larval proliferation
    Taisei Kikuchi, Mehmet Dayi, Vicky L. Hunt, Kenji Ishiwata, Atsushi Toyoda, Asuka Kounosu, Simo Sun, Yasunobu Maeda, Yoko Kondo, Belkisyole Alarcon de Noya, Oscar Noya, Somei Kojima, Toshiaki Kuramochi, Haruhiko Maruyama
    Communications Biology.2021;[Epub]     CrossRef
  • Large-scale survey of a neglected agent of sparganosis Spirometra erinaceieuropaei (Cestoda: Diphyllobothriidae) in wild frogs in China
    Xi Zhang, Xiu Hong, Shi Nan Liu, Peng Jiang, Shu Chuan Zhao, Chuan Xi Sun, Zhong Quan Wang, Jing Cui, David Blair
    PLOS Neglected Tropical Diseases.2020; 14(2): e0008019.     CrossRef
  • A Retrieved Sparganum of Spirometra erinaceieuropaei from a Korean Man during Mechanical Thrombectomy
    Yang-Ha Hwang, Wonsoo Son, Yong-Won Kim, Dong-Hun Kang, Hyun-Ha Chang, Youn-Kyoung Goo, Yeonchul Hong, Dong-Il Chung
    The Korean Journal of Parasitology.2020; 58(3): 309.     CrossRef
  • Low prevalence of spargana infection in farmed frogs in the Yangtze River Delta of China
    Xiaoli Zhang, Rongsheng Mi, Yehua Zhang, Shijie Zhang, Tao Sun, Haiyan Jia, Yan Huang, Haiyan Gong, Xiangan Han, Zhaoguo Chen
    Infection, Genetics and Evolution.2020; 85: 104466.     CrossRef
  • Development of EST-derived microsatellite markers to investigate the population structure of sparganum — the causative agent of zoonotic sparganosis
    Xi Zhang, Xiu Hong, Jiang Yang Duan, Lu Lu Han, Zi Yang Hong, Peng Jiang, Zhong Quan Wang, Jing Cui
    Parasitology.2019; 146(07): 947.     CrossRef
  • Genetic Identification of Spirometra erinaceieuropaei Spargana in Liaoning and Hubei Provinces, PR China
    Li He, Zheng-Ming Fang, Ting Xue, Er-Fu Zhang, Chun-Li An
    The Korean Journal of Parasitology.2019; 57(3): 309.     CrossRef
  • Characterization of the complete mitochondrial genome of Spirometra decipiens (Cestoda: Diphyllobothriidae) from China
    Yue Xie, Yingxin Li, Xiaobin Gu, Senzhao Zhang, Yunjian Liu, Lu Wang, Youle Zheng, Xuan Zhou, Zhicai Zuo, Guangyou Yang
    Mitochondrial DNA Part B.2019; 4(2): 2788.     CrossRef
  • Spirometra decipiens (Cestoda: Diphyllobothriidae) Collected in A Heavily Infected Stray Cat from the Republic of Korea
    Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Keeseon S. Eom
    The Korean Journal of Parasitology.2018; 56(1): 87.     CrossRef
  • Human Sparganosis in Korea
    Jeong-Geun Kim, Chun-Seob Ahn, Woon-Mok Sohn, Yukifumi Nawa, Yoon Kong
    Journal of Korean Medical Science.2018;[Epub]     CrossRef
  • Molecular Genetic Findings of Spirometra decipiens and S. ranarum in Korea
    Hyeong-Kyu Jeon, Sun Huh, Woon-Mok Sohn, Jong-Yil Chai, Keeseon S. Eom
    The Korean Journal of Parasitology.2018; 56(4): 359.     CrossRef
  • Establishment of the complete life cycle of Spirometra (Cestoda: Diphyllobothriidae) in the laboratory using a newly isolated triploid clone
    Tetsuya Okino, Hiroshi Ushirogawa, Kumiko Matoba, Shin-ichiro Nishimatsu, Mineki Saito
    Parasitology International.2017; 66(2): 116.     CrossRef
  • Using the small subunit of nuclear ribosomal DNA to reveal the phylogenetic position of the plerocercoid larvae of Spirometra tapeworms
    Xi Zhang, Jiang Yang Duan, Zhong Quan Wang, Peng Jiang, Ruo Dan Liu, Jing Cui
    Experimental Parasitology.2017; 175: 1.     CrossRef
  • Comparative mitochondrial genomics among Spirometra (Cestoda: Diphyllobothriidae) and the molecular phylogeny of related tapeworms
    Xi Zhang, Jiang Yang Duan, Ya Li Shi, Peng Jiang, De Jun Zeng, Zhong Quan Wang, Jing Cui
    Molecular Phylogenetics and Evolution.2017; 117: 75.     CrossRef
  • Spirometra erinaceieuropaei in a wildcat (Felis silvestris) in Iran
    Milad Badri, Aida Vafae Eslahi, Hamidreza Majidiani, Majid Pirestani
    Veterinary Parasitology: Regional Studies and Reports.2017; 10: 58.     CrossRef
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  • 130 Download
  • 21 Web of Science
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Articles from Symposium on Controls of NTDs around Lake Victoria, Tanzania

High Malaria Prevalence among Schoolchildren on Kome Island, Tanzania
Min-Jae Kim, Bong-Kwang Jung, Jong-Yil Chai, Keeseon S. Eom, Tai-Soon Yong, Duk-Young Min, Julius E. Siza, Godfrey M. Kaatano, Josephat Kuboza, Peter Mnyeshi, John M. Changalucha, Yunsuk Ko, Su Young Chang, Han-Jong Rim
Korean J Parasitol 2015;53(5):571-574.
Published online October 29, 2015
DOI: https://doi.org/10.3347/kjp.2015.53.5.571
In order to determine the status of malaria among schoolchildren on Kome Island (Lake Victoria), near Mwanza, Tanzania, a total of 244 schoolchildren in 10 primary schools were subjected to a blood survey using the fingerprick method. The subjected schoolchildren were 123 boys and 121 girls who were 6-8 years of age. Only 1 blood smear was prepared for each child. The overall prevalence of malaria was 38.1% (93 positives), and sex difference was not remarkable. However, the positive rate was the highest in Izindabo Primary School (51.4%) followed by Isenyi Primary School (48.3%) and Bugoro Primary School (46.7%). The lowest prevalence was found in Muungano Primary School (16.7%) and Nyamiswi Primary School (16.7%). These differences were highly correlated with the location of the school on the Island; those located in the peripheral area revealed higher prevalences while those located in the central area showed lower prevalences. Plasmodium falciparum was the predominant species (38.1%; 93/244), with a small proportion of them mixed-infected with Plasmodium vivax (1.6%; 4/244). The results revealed that malaria is highly prevalent among primary schoolchildren on Kome Island, Tanzania, and there is an urgent need to control malaria in this area.

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Improved Perceptions and Practices Related to Schistosomiasis and Intestinal Worm Infections Following PHAST Intervention on Kome Island, North-Western Tanzania
Joseph R. Mwanga, Godfrey M. Kaatano, Julius E. Siza, Su Young Chang, Yunsuk Ko, Cyril M. Kullaya, Jackson Nsabo, Keeseon S. Eom, Tai-Soon Yong, Jong-Yil Chai, Duk-Young Min, Han-Jong Rim, John M. Changalucha
Korean J Parasitol 2015;53(5):561-569.
Published online October 29, 2015
DOI: https://doi.org/10.3347/kjp.2015.53.5.561
Schistosomiasis and intestinal worm infections are widespread diseases of public health importance in Tanzania. A study on perceptions and practices related to schistosomiasis and intestinal worm infections was undertaken among a community population of Kome Island in Sengerema District, north-western Tanzania, where intestinal schistosomiasis and intestinal worm infections are endemic. Schistosomiasis and intestinal worm-related perceptions and practices were assessed before and 3 years after implementation of a participatory hygiene and sanitation transformation (PHAST) intervention as a control measure. Data were obtained from baseline and post-intervention knowledge, attitudes, and practices (KAP) questionnaire surveys conducted twice in 2009 and 2012 among 82 individuals aged ≥15 years. We found significant increases in respondents’ knowledge of the cause, transmission, symptoms, health consequences, and prevention of schistosomiasis and intestinal worm infections after PHAST intervention. The increase in respondents’ knowledge on almost all aspects of the said infections was translated into actions to control schistosomiasis and intestinal worm infections. This has not been achieved by chance, but due to well-designed and locally-adapted PHAST intervention. We conclude that despite criticisms, PHAST approach is still useful in empowering communities to control water, sanitation, and hygiene related infectious diseases such as schistosomiasis and intestinal worm infections.

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    Phyllis Munyiva Isaiah, Doris Osei Afriyie, Mary Maghanga, Donna Obare Ogeto, Mary Amuyunzu Nyamongo, Peter Steinmann, Julia Robinson
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  • Integrated Schistosomiasis and Soil-Transmitted Helminthiasis Control over Five Years on Kome Island, Tanzania
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    The Korean Journal of Parasitology.2015; 53(5): 535.     CrossRef
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  • 123 Download
  • 17 Web of Science
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Improved Socio-Economic Status of a Community Population Following Schistosomiasis and Intestinal Worm Control Interventions on Kome Island, North-Western Tanzania
Joseph R. Mwanga, Godfrey M. Kaatano, Julius E. Siza, Su Young Chang, Yunsuk Ko, Cyril M. Kullaya, Jackson Nsabo, Keeseon S. Eom, Tai-Soon Yong, Jong-Yil Chai, Duk-Young Min, Han-Jong Rim, John M. Changalucha
Korean J Parasitol 2015;53(5):553-559.
Published online October 29, 2015
DOI: https://doi.org/10.3347/kjp.2015.53.5.553
Research on micro-level assessment of the changes of socio-economic status following health interventions is very scarce. The use of household asset data to determine wealth indices is a common procedure for estimating socio-economic position in resource poor settings. In such settings information about income is usually lacking, and the collection of individual consumption or expenditure data would require in-depth interviews, posing a considerable risk of bias. In this study, we determined the socio-economic status of 213 households in a community population in an island in the north-western Tanzania before and 3 year after implementation of a participatory hygiene and sanitation transformation (PHAST) intervention to control schistosomiasis and intestinal worm infections. We constructed a household 'wealth index' based housing construction features (e.g., type of roof, walls, and floor) and durable assets ownership (e.g., bicycle, radio, etc.). We employed principal components analysis and classified households into wealth quintiles. The study revealed that asset variables with positive factor scores were associated with higher socio-economic status, whereas asset variables with negative factor scores were associated with lower socio-economic status. Overall, households which were rated as the poorest and very poor were on the decrease, whereas those rated as poor, less poor, and the least poor were on the increase after PHAST intervention. This decrease/increase was significant. The median shifted from -0.4376677 to 0.5001073, and the mean from -0.2605787 (SD; 2.005688) to 0.2605787 (SD; 1.831199). The difference in socio-economic status of the people between the 2 phases was highly statistically significant (P<0.001). We argue that finding of this study should be treated with caution as there were other interventions to control schistosomiasis and intestinal worm infections which were running concurrently on Kome Island apart from PHAST intervention.

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    Junaid Khan, Sanjay K. Mohanty
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Schistosoma mansoni-Related Hepatosplenic Morbidity in Adult Population on Kome Island, Sengerema District, Tanzania
Godfrey M. Kaatano, Duk-Young Min, Julius E. Siza, Tai-Soon Yong, Jong-Yil Chai, Yunsuk Ko, Su-Young Chang, John M. Changalucha, Keeseon S. Eom, Han-Jong Rim
Korean J Parasitol 2015;53(5):545-551.
Published online October 29, 2015
DOI: https://doi.org/10.3347/kjp.2015.53.5.545
Schistosomiasis is one of the important neglected tropical diseases (NTDs) in Tanzania, particularly in Lake Victoria zone. This baseline survey was a part of the main study of integrated control of schistosomiasis and soil-transmitted helminths (STHs) aimed at describing morbidity patterns due to intestinal schistosomiasis among adults living on Kome Island, Sengerema District, Tanzania. Total 388 adults from Kome Islands (about 50 people from each village) aged between 12 and 85 years, were examined by abdominal ultrasound according to the Niamey protocol. Liver image patterns (LIPs) A and B were considered normal, and C-F as distinct periportal fibrosis (PPF). The overall prevalence of PPF was 42.2%; much higher in males than in females (47.0% in male vs 34.4% in females, P=0.007). Abnormal increase of segmental branch wall thickness (SBWT) and dilated portal vein diameter (PVD) were also more common in males than in females. Hepatosplenomegaly was frequently encountered; 68.1% had left liver lobe hepatomegaly and 55.2% had splenomegaly. Schistosoma mansoni-related morbidity is quite high among adults in this community justifying the implementation of integrated control strategies through mass drug administration, improved water supply (pumped wells), and health education that had already started in the study area.

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Integrated Schistosomiasis and Soil-Transmitted Helminthiasis Control over Five Years on Kome Island, Tanzania
Godfrey M. Kaatano, Julius E. Siza, Joseph R. Mwanga, Duk-Yong Min, Tai-Soon Yong, Jong-Yil Chai, Yunsuk Ko, Su Young Chang, Cyril M. Kullaya, Han-Jong Rim, John M. Changalucha, Keeseon S. Eom
Korean J Parasitol 2015;53(5):535-543.
Published online October 29, 2015
DOI: https://doi.org/10.3347/kjp.2015.53.5.535
Integrated control strategies are important for sustainable control of schistosomiasis and soil-transmitted helminthiasis, despite their challenges for their effective implementation. With the support of Good Neighbors International in collaboration with National Institute of Medical Research, Mwanza, Tanzania, integrated control applying mass drug administration (MDA), health education using PHAST, and improved safe water supply has been implemented on Kome Island over 5 years for controlling schistosomiasis and soil-transmitted helminths (STHs). Baseline surveys for schistosomiasis and STHs was conducted before implementation of any integrated control strategies, followed by 4 cross-sectional follow-up surveys on randomly selected samples of schoolchildren and adults in 10 primary schools and 8 villages, respectively, on Kome islands. Those follow-up surveys were conducted for impact evaluation after introduction of control strategies interventions in the study area. Five rounds of MDA have been implemented from 2009 along with PHAST and improved water supply with pumped wells as other control strategies for complementing MDA. A remarkable steady decline of schistosomiasis and STHs was observed from 2009 to 2012 with significant trends in their prevalence decline, and thereafter infection rate has remained at a low sustainable control. By the third follow-up survey in 2012, Schistosoma mansoni infection prevalence was reduced by 90.5% and hookworm by 93.3% among schoolchildren while in adults the corresponding reduction was 83.2% and 56.9%, respectively. Integrated control strategies have successfully reduced S. mansoni and STH infection status to a lower level. This study further suggests that monitoring and evaluation is a crucial component of any large-scale STH and schistosomiasis intervention.

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    Tereza Cristina Favre, Cristiano Lara Massara, Lilian Christina N?brega Holsbach Beck, Roc?o Karina Saavedra Acero Cabello, Otavio Sarmento Pieri
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    Gemechu Tadesse Leta, Kalkidan Mekete, Yonas Wuletaw, Abeba Gebretsadik, Heven Sime, Sindew Mekasha, Adugna Woyessa, Oumer Shafi, Jozef Vercruysse, Jack E. T. Grimes, Iain Gardiner, Michael French, Bruno Levecke, Lesley Drake, Wendy Harrison, Alan Fenwick
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  • Baseline prevalence and intensity of schistosomiasis at sentinel sites in Madagascar: Informing a national control strategy
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  • Schistosoma mansoni infection and related knowledge among schoolchildren in an endemic area of Minas Gerais, Brazil, prior to educational actions
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Prevalence of Schistosomes and Soil-Transmitted Helminths and Morbidity Associated with Schistosomiasis among Adult Population in Lake Victoria Basin, Tanzania
Julius E. Siza, Godfrey M. Kaatano, Jong-Yil Chai, Keeseon S. Eom, Han-Jong Rim, Tai-Soon Yong, Duk-Young Min, Su Young Chang, Yunsuk Ko, John M. Changalucha
Korean J Parasitol 2015;53(5):525-533.
Published online October 29, 2015
DOI: https://doi.org/10.3347/kjp.2015.53.5.525
The
objective
of this study was to carry out a community survey on schistosomiais and soil-transmitted helminth (STH) infections in order to suggest feasible and effective intervention strategies in Lake Victoria basin, Tanzania. A total of 37 communities selected from 23 districts of the 4 regions in the Lake Victoria basin of Tanzania were involved in the study. From each of the selected locality, 50 adult community members, 25 males and 25 females, were recruited for the study. Each study participant was requested to submit stool and urine specimens. From each stool specimen, duplicate Kato-Katz thick smears were prepared and microscopically examined for Schistosoma mansoni and STH eggs. Urine specimens were processed by the filtration technique and microscopically examined for Schistosoma haematobium eggs. Ultrasound examination for morbidity due to schistosomiasis was performed. Mass treatment was done using praziquantel and albendazole for schistosome and STHs infections, respectively. Out of 1,606 adults who provided stool specimens, 199 (12.4%) were positive for S. mansoni, 349 (21.7%) for hookworms, 133 (8.3%) for Ascaris lumbricoides, and 33 (2.0%) for Trichuris trichiura. Out of 1,400 participants who provided urine specimens, 25 (1.8%) were positive for S. haematobium eggs. Because of the co-endemicity of these afflictions and their impact on vulnerable population groups, the helminthiasis could be simultaneously treated with 2 drugs, praziquantel for schistosomiasis and albendazole for STHs.

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  • Comparison of sensitivity and specificity of three diagnostic tests to detect Schistosoma mansoni infections in school children in Mwanza region, Tanzania
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Prevalence of Schistosomes and Soil-Transmitted Helminths among Schoolchildren in Lake Victoria Basin, Tanzania
Julius E. Siza, Godfrey M. Kaatano, Jong-Yil Chai, Keeseon S. Eom, Han-Jong Rim, Tai-Soon Yong, Duk-Young Min, Su Young Chang, Yunsuk Ko, John M. Changalucha
Korean J Parasitol 2015;53(5):515-524.
Published online October 29, 2015
DOI: https://doi.org/10.3347/kjp.2015.53.5.515
The
objective
s of this study was to conduct a survey on schistosomiasis and soil-transmitted helminth (STH) infections in order to come up with feasible control strategies in Lake Victoria basin, Tanzania. Depending on the size of the school, 150-200 schoolchildren were recruited for the study. Duplicate Kato-Katz stool smears were prepared from each child and microscopically examined for Schistosoma mansoni and STHs. Urine specimens were examined for Schistosoma haematobium eggs using the filtration technique. After the survey, mass drug administration was done using praziquantel and albendazole for schistosomiasis and STHs infections, respectively. A total of 5,952 schoolchildren from 36 schools were recruited for the study and had their stool and urine specimens examined. Out of 5,952 schoolchildren, 898 (15.1%) were positive for S. mansoni, 754 (12.6%) for hookworms, 188 (3.2%) for Ascaris lumblicoides, and 5 (0.008%) for Trichuris trichiura. Out of 5,826 schoolchildren who provided urine samples, 519 (8.9%) were positive for S. haematobium eggs. The results revealed that intestinal schistosomiasis, urogenital schistosomiasis, and STH infections are highly prevalent throughought the lake basin. The high prevalence of intestinal and urogenital schistosomisiasis in the study area was a function of the distance from Lake Victoria, the former being more prevalent at localities close to the lake, whilst the latter is more so away from it. Control of schistosomiasis and STHs in the study area requires an integrated strategy that involves provision of health education to communities, regular treatments, and provision of adequate safe water supply and sanitation facilities.

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Original Articles

Mitochondrial Genome Sequences of Spirometra erinaceieuropaei and S. decipiens (Cestoidea: Diphyllobothriidae)
Keeseon S. Eom, Hansol Park, Dongmin Lee, Seongjun Choe, Kyu-Heon Kim, Hyeong-Kyu Jeon
Korean J Parasitol 2015;53(4):455-463.
Published online August 25, 2015
DOI: https://doi.org/10.3347/kjp.2015.53.4.455
The present study was performed to compare the mitochondrial genomes between 2 Spirometra tapeworms, Spirometra erinaceieuropaei and Spirometra decipiens (Cestoidea: Diphyllobothriidae), which larval stages are important etiological agents of sparganosis in humans. For each species, the full mitochondrial genome was amplified in 8 overlapping fragments using total genomic DNA purified from a single worm as the template. The mitochondrial genomes were 13,643 bp (S. erinaceieuropaei) and 13,641 bp (S. decipiens) in length and contained 36 genes; 12 protein-coding genes, 2 ribosomal RNA (rRNA, small and large subunits), and 22 transfer RNAs (tRNAs). The 12 protein-coding genes constituted 10,083 bp (S. erinaceieuropaei) and 10,086 bp (S. decipiens) of their respective mitochondrial genomes. The tRNA genes, ranging in length from 56 to 70 bp, were identified based on putative secondary structures such as the typical cloverleaf shape. A total of 23 intergenic sequences, varying from 1 to 204 bp in size, were interspersed in S. erinaceieuropaei (total, 504 bp) and S. decipiens (total, 496 bp) mtDNA. The 12 protein-coding genes of S. erinaceieuropaei and S. decipiens differed by 12.4%, whereas the overall difference in mtDNA sequence between S. erinaceieuropaei and S. decipiens was 12.9%. Thus, from the standpoint of the mitochondrial genome, S. decipiens represents a valid species that can be distinguished from S. erinaceieuropaei.

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Infection Status of Zoonotic Trematode Metacercariae in Fishes from Vientiane Municipality and Champasak Province in Lao PDR
Keeseon S. Eom, Han-Sol Park, Dongmin Lee, Woon-Mok Sohn, Tai-Soon Yong, Jong-Yil Chai, Duk-Young Min, Han-Jong Rim, Bounnaloth Insisiengmay, Bounlay Phommasack
Korean J Parasitol 2015;53(4):447-453.
Published online August 25, 2015
DOI: https://doi.org/10.3347/kjp.2015.53.4.447
The infection status of fishborne zoonotic trematode (FZT) metacercariae was investigated in fishes from 2 localities of Lao PDR. Total 157 freshwater fishes (17 species) were collected in local markets of Vientiane Municipality and Champasak Province in December 2010 and July 2011, and each fish was examined by the artificial digestion method. Total 6 species of FZT metacercariae, i.e., Opisthorchis viverrini, Haplorchis taichui, Haplorchis yokogawai, Haplorchis pumilio, Centrocestus formosanus, and Procerovum varium, were detected in fishes from Vientiane Municipality. The metacercariae of O. viverrini were detected in 50 (49.5%) out of 101 fishes (6 species), and their average number was 154 per fish infected. The remaining 5 species of heterophyid metacercariae were detected in 36.8%, 65.8%, 9.4%, 23.9%, and 5.1% fishes examined, and their average densities were 12, 1,038, 4, 15, and 13 per infected fish, respectively. In fishes from Champasak Province, 3 species of FZT metacercariae, i.e., O. viverrini, H. taichui, and H. yokogawai, were detected. Only 2 O. viverrini metacercariae were found in only 1 Barbonymus schwanefeldi. The metacercariae of H. taichui and H. yokogawai were detected in 60.0% and 50.0% of fishes examined, and their average densities were 47 and 28 per fish infected. By the present study, it has been confirmed that several species of FZT metacercariae are prevalent in fishes from Vientiane Municipality, with P. varium being a new member of FZT in Lao PDR. In comparison, FZT metacercariae are less prevalent in fishes from Champasak Province.

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  • Infection status with zoonotic trematode metacercariae in fish from Lao PDR
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Intestinal Helminths Recovered from Humans in Xieng Khouang Province, Lao PDR with a Particular Note on Haplorchis pumilio Infection
Jong-Yil Chai, Woon-Mok Sohn, Bong-Kwang Jung, Tai-Soon Yong, Keeseon S. Eom, Duk-Young Min, Bounnaloth Insisiengmay, Sithat Insisiengmay, Bounlay Phommasack, Han-Jong Rim
Korean J Parasitol 2015;53(4):439-445.
Published online August 25, 2015
DOI: https://doi.org/10.3347/kjp.2015.53.4.439
A survey of intestinal helminths was undertaken in riparian people in Xieng Khouang Province, Lao PDR. Fecal specimens were collected from 643 people (289 males and 354 females) residing in 4 districts (Nonghet, Kham, Phoukout, and Pek) and were examined by the Kato-Katz technique. The overall helminth egg positive rate was 41.2%, and hookworms revealed the highest prevalence (32.7%) followed by Trichuris trichiura (7.3%) and Ascaris lumbricoides (5.6%). The positive rate for small trematode eggs (STE), which may include Opisthorchis viverrini, heterophyids, and lecithodendriids, was 4.4%. For recovery of adult helminths, 12 STE or nematode/cestode egg-positive people were treated with 40 mg/kg praziquantel and 15 mg/kg pyrantel pamoate, and then purged. Mixed infections with 2 Haplorchis species (H. pumilio and H. taichui), Centrocestus formosanus, Opisthorchis viverrini, a species of cestode (Taenia saginata), and several species of nematodes including hookworms and Enterobius vermicularis were detected. The worm load for trematodes was the highest for H. pumilio with an average of 283.5 specimens per infected person followed by C. formosanus, H. taichui, and O. viverrini. The worm load for nematodes was the highest for hookworms (21.5/infected case) followed by E. vermicularis (3.2/infected case). The results revealed that the surveyed areas of Xieng Khouang Province, Lao PDR are endemic areas of various species of intestinal helminths. The STE found in the surveyed population were verified to be those of heterophyids, particularly H. pumilio.

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Human Infections with Spirometra decipiens Plerocercoids Identified by Morphologic and Genetic Analyses in Korea
Hyeong-Kyu Jeon, Hansol Park, Dongmin Lee, Seongjun Choe, Kyu-Heon Kim, Sun Huh, Woon-Mok Sohn, Jong-Yil Chai, Keeseon S. Eom
Korean J Parasitol 2015;53(3):299-305.
Published online June 30, 2015
DOI: https://doi.org/10.3347/kjp.2015.53.3.299
Tapeworms of the genus Spirometra are pseudophyllidean cestodes endemic in Korea. At present, it is unclear which Spirometra species are responsible for causing human infections, and little information is available on the epidemiological profiles of Spirometra species infecting humans in Korea. Between 1979 and 2009, a total of 50 spargana from human patients and 2 adult specimens obtained from experimentally infected carnivorous animals were analyzed according to genetic and taxonomic criteria and classified as Spirometra erinaceieuropaei or Spirometra decipiens depending on the morphology. Morphologically, S. erinaceieuropaei and S. decipiens are different in that the spirally coiled uterus in S. erinaceieuropaei has 5-7 complete coils, while in S. decipiens it has only 4.5 coils. In addition, there is a 9.3% (146/1,566) sequence different between S. erinaceieuropaei and S. decipiens in the cox1 gene. Partial cox1 sequences (390 bp) from 35 Korean isolates showed 99.4% (388/390) similarity with the reference sequence of S. erinaceieuropaei from Korea (G1724; GenBank KJ599680) and an additional 15 Korean isolates revealed 99.2% (387/390) similarity with the reference sequences of S. decipiens from Korea (G1657; GenBank KJ599679). Based on morphologic and molecular databases, the estimated population ratio of S. erinaceieuropaei to S. decipiens was 35: 15. Our results indicate that both S. erinaceieuropaei and S. decipiens found in Korea infect humans, with S. erinaceieuropaei being 2 times more prevalent than S. decipiens. This study is the first to report human sparganosis caused by S. decipiens in humans in Korea.

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Case Report

Three Cases of Diphyllobothrium nihonkaiense Infection in Korea
Hong-Ja Kim, Keeseon S. Eom, Min Seo
Korean J Parasitol 2014;52(6):673-676.
Published online December 23, 2014
DOI: https://doi.org/10.3347/kjp.2014.52.6.673

Until 2012, a total of 48 cases of diphyllobothriasis had been reported in Korea, all of which were morphologically identified as Diphyllobothrium latum. However, some of these specimens were analyzed by nucleotide sequencing of the mitochondrial cox1 gene, which showed that all were D. nihonkaiense, not D. latum. After that, 3 further cases of diphyllobothriasis were confirmed as D. nihonkaiense. In the present study, 3 new cases of D. nihonkaiense were detected from 2011 through 2013. The hosts were infected through consumption of salmonid fishes, such as the trout or salmon, and 2 of them experienced severe diarrhea prior to proglottid passage. All of the tapeworms were confirmed to be D. nihonkaiense by genetic identification. This proved again that most diphyllobothriasis in Korea have been caused by D. nihonkaiense.

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Original Article

Prevalence of Intestinal Helminths among Inhabitants of Cambodia (2006-2011)
Tai-Soon Yong, Jong-Yil Chai, Woon-Mok Sohn, Keeseon S. Eom, Hoo-Gn Jeoung, Eui-Hyug Hoang, Cheong-Ha Yoon, Bong-Kwang Jung, Soon-Hyung Lee, Muth Sinuon, Duong Socheat
Korean J Parasitol 2014;52(6):661-666.
Published online December 23, 2014
DOI: https://doi.org/10.3347/kjp.2014.52.6.661

In order to investigate the status of intestinal helminthic infections in Cambodia, epidemiological surveys were carried out on a national scale, including 19 provinces. A total of 32,201 fecal samples were collected from schoolchildren and adults between 2006 and 2011 and examined once by the Kato-Katz thick smear technique. The overall egg positive rate of intestinal helminths was 26.2%. The prevalence of hookworms was the highest (9.6%), followed by that of Opisthorchis viverrini/minute intestinal flukes (Ov/MIF) (5.7%), Ascaris lumbricoides (4.6%), and Trichuris trichiura (4.1%). Other types of parasites detected were Enterobius vermicularis (1.1%), Taenia spp. (0.4%), and Hymenolepis spp. (0.2%). The northwestern regions such as the Siem Reap, Oddar Meanchey, and Banteay Meanchey Provinces showed higher prevalences (17.4-22.3%) of hookworms than the other localities. The southwestern areas, including Koh Kong and Preah Sihanouk Provinces showed higher prevalences of A. lumbricoides (17.5-19.2%) and T. trichiura (6.1-21.0%). Meanwhile, the central and southern areas, in particular, Takeo and Kampong Cham Provinces, showed high prevalences of Ov/MIF (23.8-24.0%). The results indicate that a considerably high prevalence of intestinal helminths has been revealed in Cambodia, and thus sustained national parasite control projects are necessary to reduce morbidity due to parasitic infections in Cambodia.

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Case Report
Strongyloides myopotami (Secernentea: Strongyloididae) from the Intestine of Feral Nutrias (Myocastor coypus) in Korea
Seongjun Choe, Dongmin Lee, Hansol Park, Mihyeon Oh, Hyeong-Kyu Jeon, Keeseon S. Eom
Korean J Parasitol 2014;52(5):531-535.
Published online October 22, 2014
DOI: https://doi.org/10.3347/kjp.2014.52.5.531

Surveys on helminthic fauna of the nutria, Myocastor coypus, have seldom been performed in the Republic of Korea. In the present study, we describe Strongyloides myopotami (Secernentea: Strongyloididae) recovered from the small intestine of feral nutrias. Total 10 adult nutrias were captured in a wetland area in Gimhae-si (City), Gyeongsangnam-do (Province) in April 2013. They were transported to our laboratory, euthanized with ether, and necropsied. About 1,300 nematode specimens were recovered from 10 nutrias, and some of them were morphologically observed by light and scanning electron microscopies. They were 3.7-4.7 (4.0±0.36) mm in length, 0.03-0.04 (0.033) mm in width. The worm dimension and other morphological characters, including prominent lips of the vulva, blunted conical tail, straight type of the ovary, and 8-chambered stoma, were all consistent with S. myopotami. This nematode fauna is reported for the first time in Korea.

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