Parasites, Hosts and Diseases

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Original Articles

Determinant of parasite clearance and density on uncomplicated falciparum malaria infections in malaria-endemic area of Lampung Province, Indonesia: Jhons Fatriyadi Suwandi, Agnes Kurniawan, Lisawati Susanto; Parasites Hosts Dis 2023;61(2):147-153.
Published online May 23, 2023; DOI: https://doi.org/10.3347/PHD.22073

Lampung is a malaria-endemic region in Indonesia with an annual parasite incidence of 0.06 per 1,000 population. The socio-demographic factors, clinical conditions, and artemisinin combination therapy (ACT) types might affect parasite clearance and parasite density. This study aims to investigate factors that influence parasite clearance and parasite density in malaria patients. A retrospective analytic observational and a cross-sectional approach was used to conduct this study. A total of 66 malaria patients were examined to investigate parasite density and clearance, socio-demographic profiles, clinical conditions, and ACT types. To analyze data, univariate, bivariate, and multivariate tests were used. Age (P=0.045; r=0.238) and ACT type (P=0.021; r=0.273) were the only variables that had a significant correlation with parasite clearance. Age (P=0.003; r=0.345) had a significant correlation with parasite density. The most influential factors related to parasite clearance were the ACT type (dihydroartemisinin piperaquine) (P=0.017; odds ratio (OR) 0.109; 95.0% confidence interval (CI), 0.018–0.675) and age (P=0.030; OR 0.132; 95.0% CI, 0.021–0.823). Age (P=0.046; OR 0.320; 0.105–0.978, 95.0% CI) was the most significant variable associated with parasite density.

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Enzymatic mechanisms of insecticide resistance in Anopheles sp mosquitoes: Implications for malaria vector control in Indonesia
Rizal Subahar, Lisawati Susanto, Surya Dwira, Hendri Astuty, Nurhadi Eko Firmansyah, Gulshan Fahmi El Bayani, Tilahun Adugna, Syarifah Dewi, Fadillah
Acta Tropica.2025; 268: 107691. CrossRef

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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.

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