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. 2010 Dec;48(4):339-42.
doi: 10.3347/kjp.2010.48.4.339. Epub 2010 Dec 16.

Prevalence of the intestinal flukes Haplorchis taichui and H. yokogawai in a mountainous area of Phongsaly Province, Lao PDR

Jong-Yil Chai  1 , Tai-Soon Yong, Keeseon S Eom, Duk-Young Min, Eun-Hee Shin, Virasack Banouvong, Bounnaloth Insisiengmay, Sithat Insisiengmay, Bounlay Phommasack, Han-Jong Rim
Affiliations

Prevalence of the intestinal flukes Haplorchis taichui and H. yokogawai in a mountainous area of Phongsaly Province, Lao PDR

Jong-Yil Chai et al. Korean J Parasitol. 2010 Dec.

Abstract

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.

Keywords: Haplorchis taichui; Haplorchis yokogawai; Laos; Phaneropsolus bonnei; Phongsali Province; Taenia saginata; Trichostrongylus; prevalence.

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Figures

Fig. 1
Fig. 1
Map showing the surveyed area of Lao PDR (arrow: Khoua District, Phongsaly Province).
See this image and copyright information in PMC

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