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Intestinal Helminths Recovered from Humans in Xieng Khouang Province, Lao PDR with a Particular Note on Haplorchis pumilio Infection

Authors
 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 
Citation
 KOREAN JOURNAL OF PARASITOLOGY, Vol.53(4) : 439-445, 2015 
Journal Title
 KOREAN JOURNAL OF PARASITOLOGY 
ISSN
 0023-4001 
Issue Date
2015
MeSH
Adolescent ; Adult ; Aged ; Aged, 80 and over ; Animals ; Cestode Infections/epidemiology ; Cestode Infections/parasitology ; Female ; Helminthiasis/epidemiology ; Helminthiasis/parasitology* ; Helminths/classification ; Helminths/genetics ; Helminths/isolation & purification* ; Humans ; Intestines/parasitology* ; Laos/epidemiology ; Male ; Middle Aged ; Platyhelminths/classification ; Platyhelminths/genetics ; Platyhelminths/isolation & purification* ; Young Adult
Keywords
Haplorchis pumilio ; Haplorchis taichui ; Lao PDR ; intestinal fluke
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.
Files in This Item:
T201505956.pdf Download
DOI
10.3347/kjp.2015.53.4.439
Appears in Collections:
1. College of Medicine (의과대학) > Dept. of Environmental Medical Biology (환경의생물학교실) > 1. Journal Papers
Yonsei Authors
Yong, Tai Soon(용태순) ORCID logo https://orcid.org/0000-0002-3445-0769
URI
https://ir.ymlib.yonsei.ac.kr/handle/22282913/157194
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