Parasites, Hosts and Diseases

"Haplorchis yokogawai"

Original Articles

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

Abstract
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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.

Citations

Citations to this article as recorded by

Re‐evaluation of certain aspects of the EFSA Scientific Opinion of April 2010 on risk assessment of parasites in fishery products, based on new scientific data. Part 2
Ana Allende, Avelino Alvarez‐Ordóñez, Valeria Bortolaia, Sara Bover‐Cid, Alessandra De Cesare, Wietske Dohmen, Laurent Guillier, Lieve Herman, Liesbeth Jacxsens, Maarten Nauta, Lapo Mughini‐Gras, Jakob Ottoson, Luisa Peixe, Fernando Perez‐Rodriguez, Panag
EFSA Journal.2024;[Epub] CrossRef
Infection rate of Opisthorchis viverrini metacercariae in cyprinoid fish from the markets and its association to human opisthorchiasis in the local community in the Northeast Thailand
Lakhanawan Charoensuk, Alexis Ribas, Kacha Chedtabud, Suksanti Prakobwong
Acta Tropica.2022; 225: 106216. CrossRef
Similarities and differences among the Opisthorchiidae liver flukes: insights from Opisthorchis felineus
Maria Y. Pakharukova, Viatcheslav A. Mordvinov
Parasitology.2022; 149(10): 1306. 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
Discovery of Carcinogenic Liver Fluke Metacercariae in Second Intermediate Hosts and Surveillance on Fish-Borne Trematode Metacercariae Infections in Mekong Region of Myanmar
Ei Ei Phyo Myint, Amornpun Sereemaspun, Joacim Rocklöv, Choosak Nithikathkul
International Journal of Environmental Research and Public Health.2020; 17(11): 4108. CrossRef
Larval Gnathostomes and Zoonotic Trematode Metacercariae in Fish from a Local Market in Yangon City, Myanmar
Jong-Yil Chai, Bong-Kwang Jung, Keon Hoon Lee, Jin-Youp Ryu, Hyeon-Seung Kim, Sung-Jong Hong, Thi Thi Htoon, Htay Htay Tin, Byoung-Kuk Na, Woon-Mok Sohn
The Korean Journal of Parasitology.2020; 58(6): 701. CrossRef
Infection status with zoonotic trematode metacercariae in fish from Lao PDR
Jong-Yil Chai, Soon-Hyung Lee, Han-Jong Rim, Woon-Mok Sohn, Bounlay Phommasack
Acta Tropica.2019; 199: 105100. CrossRef
Ultrasonographic investigation of cholangiocarcinoma in Lao PDR
Ju Yeong Kim, Tai-Soon Yong, Han-Jong Rim, Jong-Yil Chai, Duk-Young Min, Keeseon S. Eom, Woon-Mok Sohn, Jae Hoon Lim, Dongil Choi, Sithat Insisiengmay, Bounlay Phommasack, Bounnaloth Insisiengmay
Acta Tropica.2018; 182: 128. CrossRef
Opisthorchis viverrini infection in the snail and fish intermediate hosts in Central Vietnam
Ha Thanh Thi Dao, Veronique Dermauw, Sarah Gabriël, Apiporn Suwannatrai, Smarn Tesana, Giang Thanh Thi Nguyen, Pierre Dorny
Acta Tropica.2017; 170: 120. CrossRef
Metacercaria Infection Status of Fishborne Zoonotic Trematodes, Except for Clonorchis sinensis in Fish from the Heilongjiang Province, China
Jian-Hua Qiu, Ying Zhang, Xiao-Xuan Zhang, Yuan Gao, Qi Li, Qiao-Cheng Chang, Chun-Ren Wang
Foodborne Pathogens and Disease.2017; 14(8): 440. CrossRef
Fishborne zoonotic heterophyid infections: An update
Jong-Yil Chai, Bong-Kwang Jung
Food and Waterborne Parasitology.2017; 8-9: 33. CrossRef
Prevalence of Centrocestus formosanus Metacercariae in Ornamental Fish from Chiang Mai, Thailand, with Molecular Approach Using ITS2
Atcharaphan Wanlop, Chalobol Wongsawad, Pongphol Prattapong, Pheravut Wongsawad, Thapana Chontananarth, Jong-Yil Chai
The Korean Journal of Parasitology.2017; 55(4): 445. CrossRef
Zoonotic Trematode Metacercariae in Fish from Yangon, Myanmar and Their Adults Recovered from Experimental Animals
Jong-Yil Chai, Woon-Mok Sohn, Byoung-Kuk Na, Jong-Bok Park, Hoo-Gn Jeoung, Eui-Hyug Hoang, Thi Thi Htoon, Htay Htay Tin
The Korean Journal of Parasitology.2017; 55(6): 631. CrossRef

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Zoonotic Trematode Metacercariae in Fish from Phnom Penh and Pursat, Cambodia: Jong-Yil Chai, Woon-Mok Sohn, Byoung-Kuk Na, Tai-Soon Yong, Keeseon S. Eom, Cheong-Ha Yoon, Eui-Hyug Hoang, Hoo-Gn Jeoung, Duong Socheat; Korean J Parasitol 2014;52(1):35-40.
Published online February 19, 2014; DOI: https://doi.org/10.3347/kjp.2014.52.1.35

Abstract
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A survey was performed to investigate the infection status of freshwater fish with zoonotic trematode metacercariae in Phnom Penh and Pursat Province, Cambodia. All collected fish with ice were transferred to our laboratory and examined using the artificial digestion method. In fish from Phnom Penh, 2 kinds of metacercariae (Opisthorchis viverrini and Haplorchis yokogawai) were detected. O. viverrini metacercariae were positive in 37 (50.0%) of 74 fish in 11 species (average no. metacercariae/fish, 18.6). H. yokogawai metacercariae were detected in 23 (57.5%) of 40 fish in 5 species (average no. metacercariae/fish, 21.0). In fish from Pursat Province, 5 kinds of metacercariae (O. viverrini, H. yokogawai, Haplorchis pumilio, Centrocestus formosanus, and Procerovum sp.) were detected; O. viverrini metacercariae (n=3) in 2 fish species (Henicorhynchus lineatus and Puntioplites falcifer), H. yokogawai metacercariae (n=51) in 1 species (P. falcifer), H. pumilio metacercariae (n=476) in 2 species (H. lineatus and Pristolepis fasciata), C. formosanus metacercariae (n=1) in 1 species (H. lineatus), and Procerovum sp. metacercariae (n=63) in 1 species (Anabas testudineus). From the above results, it has been confirmed that various freshwater fish play the role of a second intermediate host for zoonotic trematodes (O. viverrini, H. yokogawai, H. pumilio, C. formosanus, and Procerovum sp.) in Cambodia.

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Infection status with zoonotic trematode metacercariae in fish from Lao PDR
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Acta Tropica.2019; 199: 105100. CrossRef
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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
The Korean Journal of Parasitology.2015; 53(4): 447. CrossRef

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134 Download
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Fishborne Trematode Metacercariae in Luang Prabang, Khammouane, and Saravane Province, Lao PDR: Han-Jong Rim, Woon-Mok Sohn, Tai-Soon Yong, Keeseon S. Eom, Jong-Yil Chai, Duk-Young Min, Soon-Hyung Lee, Eui-Hyug Hoang, Bounlay Phommasack, Sithat Insisiengmay; Korean J Parasitol 2013;51(1):107-114.
Published online February 18, 2013; DOI: https://doi.org/10.3347/kjp.2013.51.1.107

Abstract
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Fishborne trematode (FBT) metacercariae were investigated in fish from 3 Provinces of Lao PDR. Total 242 freshwater fish of 40 species were collected in local markets of Luang Prabang (59 fish of 16 species), Khammouane (81 fish of 19 species), and Saravane (97 fish of 14 species), and each of them was examined by artificial digestion method. Four species of metacercariae (Opisthorchis viverrini, Haplorchis taichui, Haplorchis yokogawai, and Centrocestus formosanus) were detected. O. viverrini was detected in 35 fish (14.5%), and their density was 252 per infected fish (Luang Prabang, 88 metacercariae in 5 fish; Khammouane, 187 in 6 fish; Saravane, 303 in 24 fish). H. taichui was found in 102 fish (42.1%), and their density was 485 per infected fish (Luang Prabang, 260 metacercariae in 38 fish; Khammouane, 1,084 in 23 fish; Saravane, 359 in 41 fish). H. yokogawai was detected in 92 fish (38.0%), and their density was 222 per infected fish (Luang Prabang, 362 metacercariae in 17 fish; Khammouane, 126 in 20 fish; Saravane, 214 in 55 fish). Metacercariae of C. formosanus were found in 8 fish (3.3%), and their density was 3 per infected fish. In the present study, it has been confirmed that FBT metacercariae, in particular, H. taichui, H. yokogawai, and O. viverrini, are highly prevalent in fish from Luang Prabang, Khammouane, and Saravane Province, Lao PDR.

Citations

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Prevalence of Foodborne Trematodes in Small Indigenous Fish Species in Local Markets of Phnom Penh, Cambodia
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The Korean Journal of Parasitology.2021; 59(2): 131. CrossRef
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The American Journal of Tropical Medicine and Hygiene.2020; 102(1): 110. CrossRef
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The American Journal of Tropical Medicine and Hygiene.2020; 103(3): 1118. CrossRef
Infection status with zoonotic trematode metacercariae in fish from Lao PDR
Jong-Yil Chai, Soon-Hyung Lee, Han-Jong Rim, Woon-Mok Sohn, Bounlay Phommasack
Acta Tropica.2019; 199: 105100. CrossRef
Ultrasonographic investigation of cholangiocarcinoma in Lao PDR
Ju Yeong Kim, Tai-Soon Yong, Han-Jong Rim, Jong-Yil Chai, Duk-Young Min, Keeseon S. Eom, Woon-Mok Sohn, Jae Hoon Lim, Dongil Choi, Sithat Insisiengmay, Bounlay Phommasack, Bounnaloth Insisiengmay
Acta Tropica.2018; 182: 128. CrossRef
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Mothers’ Opisthorchis viverrini infection status and raw fish dish consumption in Lao People’s Democratic Republic: determinants of child infection status
Hitomi Araki, Ken Ing Cherng Ong, Lavy Lorphachan, Pheovaly Soundala, Moritoshi Iwagami, Akira Shibanuma, Bouasy Hongvanthong, Paul T. Brey, Shigeyuki Kano, Masamine Jimba
Tropical Medicine and Health.2018;[Epub] CrossRef
Transmission of Opisthorchis viverrini, Schistosoma mekongi and soil-transmitted helminthes on the Mekong Islands, Southern Lao PDR
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Infectious Diseases of Poverty.2017;[Epub] CrossRef
Fishborne zoonotic heterophyid infections: An update
Jong-Yil Chai, Bong-Kwang Jung
Food and Waterborne Parasitology.2017; 8-9: 33. CrossRef
Zoonotic Trematode Metacercariae in Fish from Yangon, Myanmar and Their Adults Recovered from Experimental Animals
Jong-Yil Chai, Woon-Mok Sohn, Byoung-Kuk Na, Jong-Bok Park, Hoo-Gn Jeoung, Eui-Hyug Hoang, Thi Thi Htoon, Htay Htay Tin
The Korean Journal of Parasitology.2017; 55(6): 631. CrossRef
Prevalence of fish-borne trematodes of the family Heterophyidae at Pasak Cholasid Reservoir, Thailand
D. Krailas, N. Veeravechsukij, C. Chuanprasit, D. Boonmekam, S. Namchote
Acta Tropica.2016; 156: 79. CrossRef
Comparison of infectivity, metacercarial burden and host mortality induced byOpisthorchis viverrinisensu lato cercariae from Lao PDR compared with Thailand in cyprinid fish,Barbonymus gonionotus
Kulthida Kopolrat, Paiboon Sithithaworn, Nadda Kiatsopit, Opal Pitaksakulrat, Smarn Tesana, Ross H. Andrews, Trevor N. Petney
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Khampheng Phongluxa, Peter van Eeuwijk, Phonepasong Ayé Soukhathammavong, Kongsap Akkhavong, Peter Odermatt
Acta Tropica.2015; 141: 281. CrossRef
Patterns of trematode infections of Opisthorchis viverrini (Opisthorchiidae) and Haplorchis taichui (Heterophyidae) in human populations from two villages in Savannakhet Province, Lao PDR
M. Sato, T. Pongvongsa, S. Sanguankiat, T. Yoonuan, J. Kobayashi, B. Boupha, F. Nishimoto, K. Moji, M.O. Sato, J. Waikagul
Journal of Helminthology.2015; 89(4): 439. CrossRef
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
The Korean Journal of Parasitology.2015; 53(4): 447. CrossRef
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Foojan Mehrdana, Hannah Jensen, Per Kania, Kurt Buchmann
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Zoonotic Trematode Metacercariae in Fish from Phnom Penh and Pursat, Cambodia
Jong-Yil Chai, Woon-Mok Sohn, Byoung-Kuk Na, Tai-Soon Yong, Keeseon S. Eom, Cheong-Ha Yoon, Eui-Hyug Hoang, Hoo-Gn Jeoung, Duong Socheat
The Korean Journal of Parasitology.2014; 52(1): 35. CrossRef
Retrotransposon OV-RTE-1 from the carcinogenic liver fluke Opisthorchis viverrini: Potential target for DNA-based diagnosis
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Brief Communication

Prevalence of the Intestinal Flukes Haplorchis taichui and H. yokogawai in a Mountainous Area of Phongsaly Province, Lao PDR: Jong-Yil Chai, Tai-Soon Yong, Keeseon S. Eom, Duk-Young Min, Eun-Hee Shin, Virasack Banouvong, Bounnaloth Insisiengmay, Sithat Insisiengmay, Bounlay Phommasack, Han-Jong Rim; Korean J Parasitol 2010;48(4):339-342.
Published online December 16, 2010; DOI: https://doi.org/10.3347/kjp.2010.48.4.339

Abstract
PDF

Phongsaly Province, located in the northernmost area of Lao PDR, was previously suggested to be endemic for the liver fluke Opisthorchis viverrini infection. To confirm, or rule out, this suggestion, the Phonxay village in the Khoua District, Phongsaly Province, was selected for a survey. Ten volunteers (8 men and 2 women aged 31-57 years) who consumed raw freshwater fish and had gastrointestinal troubles were treated with a single dose of praziquantel (40 mg/kg) and pyrantel pamoate (10 mg/kg) and purged with magnesium sulfate to recover any worm parasites. Eight of the 10 volunteers expelled 1 or more species of trematodes, nematodes, or cestodes (worm positive rate; 80%). The worms were morphologically identified as H. taichui (861 worms from 8 people), H. yokogawai (59 from 6 people), Phaneropsolus bonnei (1 from 1 person), Trichostrongylus sp. (2 from 2 people), Ascaris lumbricoides (2 from 1 person), Enterobius vermicularis (11 from 3 people), and Taenia saginata (1 strobila with scolex from 1 person). The results indicate that the mountainous area of Phongsaly Province, Lao PDR, is not endemic for the liver fluke but endemic for intestinal flukes, in particular, Haplorchis taichui and H. yokogawai.

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Original Articles

High Prevalence of Haplorchis taichui, Phaneropsolus molenkampi, and Other Helminth Infections among People in Khammouane Province, Lao PDR: Jong-Yil Chai, Eun-Taek Han, Eun-Hee Shin, Woon-Mok Sohn, Tai-Soon Yong, Keeseon S. Eom, Duk-Young Min, Jin-Young Um, Min-Sung Park, Eui-Hyug Hoang, Bounlay Phommasack, Bounnaloth Insisiengmay, Soon-Hyung Lee, Han-Jong Rim; Korean J Parasitol 2009;47(3):243-247.
Published online August 28, 2009; DOI: https://doi.org/10.3347/kjp.2009.47.3.243

Abstract
PDF

The prevalence of liver and intestinal helminth infections, including Opisthorchis, Haplorchis, Phaneropsolus, hookworms, Enterobius, and Taenia, was surveyed in Khammouane province, Lao PDR. Fecal specimens were collected from 1,242 people (590 men and 652 women) in 3 Mekong riverside villages and were examined by the Kato-Katz thick smear technique. The overall helminth egg positive rate was 81.1%. The positive rate for small trematode eggs, including Opisthorchis viverrini, heterophyids, and lecithodendriids, was 81.1% and the positive rate for hookworms was 6.7%. To obtain adult worms, 35 people who were positive for small trematode eggs were treated with 20-30 mg/kg praziquantel and 10-15 mg/kg pyrantel pamoate, and then purged. Diarrheic stools were collected from 33 of these people and searched for helminth parasites using a stereomicroscope. Mixed infections with various helminths (Haplorchis taichui, Haplorchis yokogawai, Prosthodendrium molenkampi, Phaneropsolus bonnei, echinostomes, hookworms, Trichostrongylus spp., Trichuris trichiura, Enterobius vermicularis, and/or Taenia saginata) were found. The total number of helminth specimens collected was 20,907 (approximately 634 per person). The most common species was H. taichui, followed by P. molenkampi, O. viverrini, P. bonnei, E. vermicularis, hookworms, and Trichostrongylus spp. These results show that diverse species of intestinal nematodes, trematodes, and cestodes are infecting humans in Khammouane province, Lao PDR.

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Fishborne Trematode Metacercariae Detected in Freshwater Fish from Vientiane Municipality and Savannakhet Province, Lao PDR: Han-Jong Rim, Woon-Mok Sohn, Tai-Soon Yong, Keeseon S. Eom, Jong-Yil Chai, Duk-Young Min, Soon-Hyung Lee, Eui-Hyug Hoang, Bounlay Phommasack, Sithat Insisengmay; Korean J Parasitol 2008;46(4):253-260.
Published online December 20, 2008; DOI: https://doi.org/10.3347/kjp.2008.46.4.253

Abstract
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Freshwater fish from Vientiane Municipality and Savannakhet Province, Lao PDR were examined by the muscle compression and artificial digestion methods to know the infection status with trematode metacercariae. In the fish from Savannakhet, 2 species of metacercariae, Opisthorchis viverrini and Haplorchis taichui, were detected. O. viverrini metacercariae were found in 6 species of fish, Puntius brevis, Hampala dispar, Esomus metallicus, Mystacoleucus marginatus, Puntioplites falcifer, and Cyclocheilichthys armatus. H. taichui metacercariae were detected in 3 species of fish, P. brevis, P. falcifer, and M. marginatus. In the fish from Vientiane, 4 species of metacercariae, O. viverrini, H. taichui, Haplorchis yokogawai, and Centrocestus formosanus, were detected. Among them, O. viverrini metacercariae were found in 7 species of fish, Onychostoma elongatum, C. armatus, H. dispar, P. brevis, Cyclocheilichthys repasson, Osteochilus hasseltii, and Hypsibarbus lagleri. The metacercariae of H. taichui were detected in 6 species of fish, C. repasson, O. elongatum, C. armatus, H. dispar, Labiobarbus leptocheila, and Cirrhinus molitorella. The metacercariae of H. yokogawai were found in 9 species of fish, C. repasson, O. elongatum, C. armatus, H. dispar, Labiobarbus leptocheila, O. hasseltii. C. molitorella, Hypsibarbus wetmorei, and H. lagleri. The metacercariae of C. formosanus were detected in 4 species of fish, C. repasson, P. brevis, O. hasseltii, and C. molitorella. From these results, it is confirmed that fishborne trematode metacercariae, i.e. O. viverrini, H. taichui, H. yokogawai and C. formosanus, are prevalent in various species of freshwater fish from Savannakhet Province and Vientiane Municipality, Lao PDR.

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