High prevalence of liver and intestinal fluke infections among residents of Savannakhet Province in Laos.

Jong Yil Chai, Eun Taek Han, Sang Mee Guk, Eun Hee Shin, Woon Mok Sohn, Tai Soon Yong, Keeseon S. Eom, Keon Hoon Lee, Hoo Gn Jeong, Yong Sang Ryang, Eui Hyug Hoang, Bounlay Phommasack, Bounnaloth Insisiengmay, Soon Hyung Lee, Han Jong Rim

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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.

Original languageEnglish
Pages (from-to)213-218
Number of pages6
JournalThe Korean journal of parasitology
Volume45
Issue number3
DOIs
Publication statusPublished - 2007 Sep

All Science Journal Classification (ASJC) codes

  • Parasitology
  • Infectious Diseases

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    Chai, J. Y., Han, E. T., Guk, S. M., Shin, E. H., Sohn, W. M., Yong, T. S., Eom, K. S., Lee, K. H., Jeong, H. G., Ryang, Y. S., Hoang, E. H., Phommasack, B., Insisiengmay, B., Lee, S. H., & Rim, H. J. (2007). High prevalence of liver and intestinal fluke infections among residents of Savannakhet Province in Laos. The Korean journal of parasitology, 45(3), 213-218. https://doi.org/10.3347/kjp.2007.45.3.213