Diversity of human intestinal helminthiasis in Lao PDR

Title
Diversity of human intestinal helminthiasis in Lao PDR
Authors
Sayasone, S; Vonghajack, Y; Vanmany, M; Rasphone, O; Tesana, S; Utzinger, J; Akkhavong, K; Odermatta, P
Keywords
Food-borne trematodiasis, Opisthorchis viverrini, Haplorchis taichui, Polyparasitism, Purging, Lao PDR
Issue Date
2009
Publisher
ELSEVIER SCIENCE INC
Citation
TRANSACTIONS OF THE ROYAL SOCIETY OF TROPICAL MEDICINE AND HYGIENE; Vol.103 3; 247-254
Abstract
Food-borne trematodiasis is an emerging public health problem, including in Lao PDR. We investigated the diversity of intestinal helminthes and potyparasitism in patients with hepatobiliary or intestinal symptoms in hospital and community-based surveys. Stool samples from 232 individuals aged >= 15 years were examined by the Kato-Katz method (three samples) and a formalin ethyl-acetate concentration technique (one sample). Opisthorchis viverrini and minute intestinal flukes (MIF) were common, with prevalences of 86.2% and 62.9%, respectively. Hookworm was the predominant soil-transmitted helminth (65.9%). The prevalences of of Taenia spp., Strongyloides stercoralis and Trichuris trichiura were 22.8%, 10.3% and 8.6%, respectively. Additionally, 97 individuals were purged; O. viverrini and Haplorchis taichui were found in 95 and 76 participants, respectively. Other trematodes included Phaneropsolus bonnei (22.7%), Prosthodendrium molenkampi (14.4%), Haplorchis pumilio (5.2%), Haplorchis Yokogawai (3.1%) and Echinochasmus japonicus (3.1%). Co-infection with O. viverrini and MIFs was rampant (81.4%). Polytrematode infection is highly prevalent in Lao PDR and hence requires urgent attention. (C) 2008 Royal Society of Tropical Medicine and Hygiene. Published by Elsevier Ltd. All rights reserved.
URI
http://hdl.handle.net/11267/2061
ISSN
0035-9203
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3.University of Health Sciences > Faculty of medicine > Journal articles
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