Prevalence of haplorchis taichui among humans and fish in luang prabang province, lao PDR

Woon Mok Sohn, Tai Soon Yong, Keeseon S. Eom, Duk Young Min, Dongmin Lee, Bong Kwang Jung, Virasack Banouvong, Bounnaloth Insisiengmay, Bounlay Phommasack, Han Jong Rim, Jong Yil Chai

Research output: Contribution to journalArticle

17 Citations (Scopus)

Abstract

This study confirmed the prevalence of the intestinal fluke Haplorchis taichui (Trematoda: Heterophyidae) among people and fish in Luang Prabang Province, Lao PDR. Fecal specimens were collected from 559 riparian people (229 males and 330 females), residing in 4 Districts (Luang Prabang, Xieng Ngeun, Pak Ou, and Nam Bak) and were examined by the Kato-Katz fecal smear technique. The overall helminth egg positive rate was 64.9%. The positive rate for small trematode eggs (STE), which may include H. taichui and other heterophyids, Opisthorchis viverrini, and lecithodendriids, was 15.2%. For recovery of adult helminths, 10 STE-positive people were treated with 40. mg/kg praziquantel and 15. mg/kg pyrantel pamoate, and then purged. Mixed infections with 3 Haplorchis species (H. taichui, H. pumilio, and H. yokogawai), a species of cestode (Taenia saginata), and several species of nematodes including Enterobius vermicularis and hookworms were found. The worm load for trematodes was exclusively high for H. taichui with an average of 7691 specimens per infected person, followed by H. yokogawai (8.3 specimens) and H. pumilio (4.1 specimens). Out of 207 freshwater fish (17 species) purchased in a market in Luang Prabang District, 138 (67%) harboured H. taichui metacercariae (metacercarial burden per fish; 520). Lower prevalence of fish and lower metacercarial density were observed for H. yokogawai (52% and 50 per fish, respectively) and H. pumilio (18% and 3 per fish, respectively). STE found in the surveyed population of Luang Prabang Province were verified to be those of intestinal fukes, particularly H. taichui.

Original languageEnglish
Pages (from-to)74-80
Number of pages7
JournalActa Tropica
Volume136
Issue number1
DOIs
Publication statusPublished - 2014 Jan 1

Fingerprint

Haplorchis
Laos
fish roe
Trematoda
Fishes
fish
Eggs
helminths
Helminths
Opisthorchis viverrini
Enterobius vermicularis
Heterophyidae
Taenia saginata
pyrantel
Pyrantel Pamoate
praziquantel
hookworms
Opisthorchis
Enterobius
flukes

All Science Journal Classification (ASJC) codes

  • Parasitology
  • veterinary (miscalleneous)
  • Insect Science
  • Infectious Diseases

Cite this

Sohn, Woon Mok ; Yong, Tai Soon ; Eom, Keeseon S. ; Min, Duk Young ; Lee, Dongmin ; Jung, Bong Kwang ; Banouvong, Virasack ; Insisiengmay, Bounnaloth ; Phommasack, Bounlay ; Rim, Han Jong ; Chai, Jong Yil. / Prevalence of haplorchis taichui among humans and fish in luang prabang province, lao PDR. In: Acta Tropica. 2014 ; Vol. 136, No. 1. pp. 74-80.
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abstract = "This study confirmed the prevalence of the intestinal fluke Haplorchis taichui (Trematoda: Heterophyidae) among people and fish in Luang Prabang Province, Lao PDR. Fecal specimens were collected from 559 riparian people (229 males and 330 females), residing in 4 Districts (Luang Prabang, Xieng Ngeun, Pak Ou, and Nam Bak) and were examined by the Kato-Katz fecal smear technique. The overall helminth egg positive rate was 64.9{\%}. The positive rate for small trematode eggs (STE), which may include H. taichui and other heterophyids, Opisthorchis viverrini, and lecithodendriids, was 15.2{\%}. For recovery of adult helminths, 10 STE-positive people were treated with 40. mg/kg praziquantel and 15. mg/kg pyrantel pamoate, and then purged. Mixed infections with 3 Haplorchis species (H. taichui, H. pumilio, and H. yokogawai), a species of cestode (Taenia saginata), and several species of nematodes including Enterobius vermicularis and hookworms were found. The worm load for trematodes was exclusively high for H. taichui with an average of 7691 specimens per infected person, followed by H. yokogawai (8.3 specimens) and H. pumilio (4.1 specimens). Out of 207 freshwater fish (17 species) purchased in a market in Luang Prabang District, 138 (67{\%}) harboured H. taichui metacercariae (metacercarial burden per fish; 520). Lower prevalence of fish and lower metacercarial density were observed for H. yokogawai (52{\%} and 50 per fish, respectively) and H. pumilio (18{\%} and 3 per fish, respectively). STE found in the surveyed population of Luang Prabang Province were verified to be those of intestinal fukes, particularly H. taichui.",
author = "Sohn, {Woon Mok} and Yong, {Tai Soon} and Eom, {Keeseon S.} and Min, {Duk Young} and Dongmin Lee and Jung, {Bong Kwang} and Virasack Banouvong and Bounnaloth Insisiengmay and Bounlay Phommasack and Rim, {Han Jong} and Chai, {Jong Yil}",
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Sohn, WM, Yong, TS, Eom, KS, Min, DY, Lee, D, Jung, BK, Banouvong, V, Insisiengmay, B, Phommasack, B, Rim, HJ & Chai, JY 2014, 'Prevalence of haplorchis taichui among humans and fish in luang prabang province, lao PDR', Acta Tropica, vol. 136, no. 1, pp. 74-80. https://doi.org/10.1016/j.actatropica.2014.04.020

Prevalence of haplorchis taichui among humans and fish in luang prabang province, lao PDR. / Sohn, Woon Mok; Yong, Tai Soon; Eom, Keeseon S.; Min, Duk Young; Lee, Dongmin; Jung, Bong Kwang; Banouvong, Virasack; Insisiengmay, Bounnaloth; Phommasack, Bounlay; Rim, Han Jong; Chai, Jong Yil.

In: Acta Tropica, Vol. 136, No. 1, 01.01.2014, p. 74-80.

Research output: Contribution to journalArticle

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AU - Sohn, Woon Mok

AU - Yong, Tai Soon

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AU - Min, Duk Young

AU - Lee, Dongmin

AU - Jung, Bong Kwang

AU - Banouvong, Virasack

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AU - Rim, Han Jong

AU - Chai, Jong Yil

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N2 - This study confirmed the prevalence of the intestinal fluke Haplorchis taichui (Trematoda: Heterophyidae) among people and fish in Luang Prabang Province, Lao PDR. Fecal specimens were collected from 559 riparian people (229 males and 330 females), residing in 4 Districts (Luang Prabang, Xieng Ngeun, Pak Ou, and Nam Bak) and were examined by the Kato-Katz fecal smear technique. The overall helminth egg positive rate was 64.9%. The positive rate for small trematode eggs (STE), which may include H. taichui and other heterophyids, Opisthorchis viverrini, and lecithodendriids, was 15.2%. For recovery of adult helminths, 10 STE-positive people were treated with 40. mg/kg praziquantel and 15. mg/kg pyrantel pamoate, and then purged. Mixed infections with 3 Haplorchis species (H. taichui, H. pumilio, and H. yokogawai), a species of cestode (Taenia saginata), and several species of nematodes including Enterobius vermicularis and hookworms were found. The worm load for trematodes was exclusively high for H. taichui with an average of 7691 specimens per infected person, followed by H. yokogawai (8.3 specimens) and H. pumilio (4.1 specimens). Out of 207 freshwater fish (17 species) purchased in a market in Luang Prabang District, 138 (67%) harboured H. taichui metacercariae (metacercarial burden per fish; 520). Lower prevalence of fish and lower metacercarial density were observed for H. yokogawai (52% and 50 per fish, respectively) and H. pumilio (18% and 3 per fish, respectively). STE found in the surveyed population of Luang Prabang Province were verified to be those of intestinal fukes, particularly H. taichui.

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