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ABSTRACT
The prevalence of liver and intestinal fluke infections was surveyed on residents of Savannakhet Province, Laos. Fecal specimens were collected from a total of 981 residents in 4 Mekong riverside villages and examined by the Kato-Katz thick smear technique. The results revealed that the overall helminth egg positive rate was 84.2%, and the positive rate for small trematode eggs, including Opisthorchis viverrini, heterophyids, or lecithodendriids, was 67.1%. To obtain adult flukes, 38 small trematode egg positive cases were treated with a 20-30 mg/kg single dose of praziquantel and purged. Diarrheic stools were then collected from 29 people and searched for helminth parasites using stereomicroscopes. Mixed infections with O. viverrini and 6 kinds of intestinal flukes were found, namely, Haplorchis taichui, Haplorchis pumilio, Haplorchis yokogawai, Prosthodendrium molenkampi, Phaneropsolus bonnei, and echinostomes. The total number of flukes collected was 7,693 specimens (av. no. per treated person; 265.3). The most common species was O. viverrini, followed by H. taichui, P. molenkampi, echinostomes, H. pumilio, P. bonnei, and H. yokogawai. The results indicate that foodborne liver and intestinal fluke infections are prevalent among residents of Savannakhet Province, Laos.
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Full text: Available Index: WPRIM (Western Pacific) Main subject: Parasite Egg Count / Praziquantel / Trematoda / Trematode Infections / Population Surveillance / Prevalence / Feces / Intestinal Diseases, Parasitic / Laos / Liver Diseases, Parasitic Type of study: Prevalence study / Screening study Limits: Animals / Female / Humans / Male Country/Region as subject: Asia Language: English Journal: The Korean Journal of Parasitology Year: 2007 Type: Article

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Full text: Available Index: WPRIM (Western Pacific) Main subject: Parasite Egg Count / Praziquantel / Trematoda / Trematode Infections / Population Surveillance / Prevalence / Feces / Intestinal Diseases, Parasitic / Laos / Liver Diseases, Parasitic Type of study: Prevalence study / Screening study Limits: Animals / Female / Humans / Male Country/Region as subject: Asia Language: English Journal: The Korean Journal of Parasitology Year: 2007 Type: Article