Intestinal helminths recovered from humans in Xieng Khouang Province, Lao PDR with a particular note on Haplorchis pumilio infection

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

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

A survey of intestinal helminths was undertaken in riparian people in Xieng Khouang Province, Lao PDR. Fecal specimens were collected from 643 people (289 males and 354 females) residing in 4 districts (Nonghet, Kham, Phoukout, and Pek) and were examined by the Kato-Katz technique. The overall helminth egg positive rate was 41.2%, and hookworms revealed the highest prevalence (32.7%) followed by Trichuris trichiura (7.3%) and Ascaris lumbricoides (5.6%). The positive rate for small trematode eggs (STE), which may include Opisthorchis viverrini, heterophyids, and lecithodendriids, was 4.4%. For recovery of adult helminths, 12 STE or nematode/cestode egg-positive people were treated with 40 mg/kg praziquantel and 15 mg/kg pyrantel pamoate, and then purged. Mixed infections with 2 Haplorchis species (H. pumilio and H. taichui), Centrocestus formosanus, Opisthorchis viverrini, a species of cestode (Taenia saginata), and several species of nematodes including hookworms and Enterobius vermicularis were detected. The worm load for trematodes was the highest for H. pumilio with an average of 283.5 specimens per infected person followed by C. formosanus, H. taichui, and O. viverrini. The worm load for nematodes was the highest for hookworms (21.5/infected case) followed by E. vermicularis (3.2/infected case). The results revealed that the surveyed areas of Xieng Khouang Province, Lao PDR are endemic areas of various species of intestinal helminths. The STE found in the surveyed population were verified to be those of heterophyids, particularly H. pumilio.

Original languageEnglish
Pages (from-to)439-445
Number of pages7
JournalKorean Journal of Parasitology
Volume53
Issue number4
DOIs
Publication statusPublished - 2015 Aug 25

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Laos
Helminths
Opisthorchis
Ancylostomatoidea
Enterobius
Eggs
Cestoda
Infection
Ovum
Pyrantel Pamoate
Taenia saginata
Ascaris lumbricoides
Trichuris
Praziquantel
Coinfection
Population

All Science Journal Classification (ASJC) codes

  • Parasitology
  • Infectious Diseases

Cite this

Chai, Jong Yil ; Sohn, Woon Mok ; Jung, Bong Kwang ; Yong, Tai Soon ; Eom, Keeseon S. ; Min, Duk Young ; Insisiengmay, Bounnaloth ; Insisiengmay, Sithat ; Phommasack, Bounlay ; Rim, Han Jong. / Intestinal helminths recovered from humans in Xieng Khouang Province, Lao PDR with a particular note on Haplorchis pumilio infection. In: Korean Journal of Parasitology. 2015 ; Vol. 53, No. 4. pp. 439-445.
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abstract = "A survey of intestinal helminths was undertaken in riparian people in Xieng Khouang Province, Lao PDR. Fecal specimens were collected from 643 people (289 males and 354 females) residing in 4 districts (Nonghet, Kham, Phoukout, and Pek) and were examined by the Kato-Katz technique. The overall helminth egg positive rate was 41.2{\%}, and hookworms revealed the highest prevalence (32.7{\%}) followed by Trichuris trichiura (7.3{\%}) and Ascaris lumbricoides (5.6{\%}). The positive rate for small trematode eggs (STE), which may include Opisthorchis viverrini, heterophyids, and lecithodendriids, was 4.4{\%}. For recovery of adult helminths, 12 STE or nematode/cestode egg-positive people were treated with 40 mg/kg praziquantel and 15 mg/kg pyrantel pamoate, and then purged. Mixed infections with 2 Haplorchis species (H. pumilio and H. taichui), Centrocestus formosanus, Opisthorchis viverrini, a species of cestode (Taenia saginata), and several species of nematodes including hookworms and Enterobius vermicularis were detected. The worm load for trematodes was the highest for H. pumilio with an average of 283.5 specimens per infected person followed by C. formosanus, H. taichui, and O. viverrini. The worm load for nematodes was the highest for hookworms (21.5/infected case) followed by E. vermicularis (3.2/infected case). The results revealed that the surveyed areas of Xieng Khouang Province, Lao PDR are endemic areas of various species of intestinal helminths. The STE found in the surveyed population were verified to be those of heterophyids, particularly H. pumilio.",
author = "Chai, {Jong Yil} and Sohn, {Woon Mok} and Jung, {Bong Kwang} and Yong, {Tai Soon} and Eom, {Keeseon S.} and Min, {Duk Young} and Bounnaloth Insisiengmay and Sithat Insisiengmay and Bounlay Phommasack and Rim, {Han Jong}",
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Chai, JY, Sohn, WM, Jung, BK, Yong, TS, Eom, KS, Min, DY, Insisiengmay, B, Insisiengmay, S, Phommasack, B & Rim, HJ 2015, 'Intestinal helminths recovered from humans in Xieng Khouang Province, Lao PDR with a particular note on Haplorchis pumilio infection', Korean Journal of Parasitology, vol. 53, no. 4, pp. 439-445. https://doi.org/10.3347/kjp.2015.53.4.439

Intestinal helminths recovered from humans in Xieng Khouang Province, Lao PDR with a particular note on Haplorchis pumilio infection. / Chai, Jong Yil; Sohn, Woon Mok; Jung, Bong Kwang; Yong, Tai Soon; Eom, Keeseon S.; Min, Duk Young; Insisiengmay, Bounnaloth; Insisiengmay, Sithat; Phommasack, Bounlay; Rim, Han Jong.

In: Korean Journal of Parasitology, Vol. 53, No. 4, 25.08.2015, p. 439-445.

Research output: Contribution to journalArticle

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T1 - Intestinal helminths recovered from humans in Xieng Khouang Province, Lao PDR with a particular note on Haplorchis pumilio infection

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AU - Sohn, Woon Mok

AU - Jung, Bong Kwang

AU - Yong, Tai Soon

AU - Eom, Keeseon S.

AU - Min, Duk Young

AU - Insisiengmay, Bounnaloth

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AU - Phommasack, Bounlay

AU - Rim, Han Jong

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N2 - A survey of intestinal helminths was undertaken in riparian people in Xieng Khouang Province, Lao PDR. Fecal specimens were collected from 643 people (289 males and 354 females) residing in 4 districts (Nonghet, Kham, Phoukout, and Pek) and were examined by the Kato-Katz technique. The overall helminth egg positive rate was 41.2%, and hookworms revealed the highest prevalence (32.7%) followed by Trichuris trichiura (7.3%) and Ascaris lumbricoides (5.6%). The positive rate for small trematode eggs (STE), which may include Opisthorchis viverrini, heterophyids, and lecithodendriids, was 4.4%. For recovery of adult helminths, 12 STE or nematode/cestode egg-positive people were treated with 40 mg/kg praziquantel and 15 mg/kg pyrantel pamoate, and then purged. Mixed infections with 2 Haplorchis species (H. pumilio and H. taichui), Centrocestus formosanus, Opisthorchis viverrini, a species of cestode (Taenia saginata), and several species of nematodes including hookworms and Enterobius vermicularis were detected. The worm load for trematodes was the highest for H. pumilio with an average of 283.5 specimens per infected person followed by C. formosanus, H. taichui, and O. viverrini. The worm load for nematodes was the highest for hookworms (21.5/infected case) followed by E. vermicularis (3.2/infected case). The results revealed that the surveyed areas of Xieng Khouang Province, Lao PDR are endemic areas of various species of intestinal helminths. The STE found in the surveyed population were verified to be those of heterophyids, particularly H. pumilio.

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