Prevalence of Helminthic infections among inhabitants of Lao PDR

Keeseon S. Eom, Tai Soon Yong, Woon Mok Sohn, Jong Yil Chai, Duk Young Min, Han Jong Rim, Hyeong Kyu Jeon, Virasack Banouvong, Bounnaloth Insisiengmay, Bounlay Phommasack

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28 Citations (Scopus)


The prevalence of helminthic infections was surveyed on a total of 6,178 residents (males 2,549 and females 3,629) in 102 villages of 9 provinces in Lao PDR between 2007 and 2011 under the project of Korea-Laos Collaborative Project for Control of Foodborne Trematode Infections in Lao PDR. Fecal specimens were collected and examined by the Kato-Katz thick smear and Stoll's egg counting techniques. The overall liver/intestinal helminth egg positive rate was 71.9% with a single or mixed infections with Opisthorchis viverrini and minute intestinal flukes (Ov/MIF), Ascaris lumbricoides, hookworms, Trichuris trichiura, Trichostrongylus sp., echinostomes, Taenia spp., and others. Ov/MIF revealed the highest prevalence (55.6%) followed by hookworms (27.8%) and T. trichiura (6.5%). The endemic regions with the highest prevalence of Ov/MIF were Savannakhet, Khammouane, Vientiane (Nam Ngum), Champasak (Khong Island), and Saravane Province. High prevalences of A. lumbricoides (33.8%), hookworms (47.8%), and T. trichiura (32.6%) were observed in Phongsaly, Luang Prabang, and Vientiane (Nam Ngum) areas, respectively. The results of this study highlight helminth parasites of current public health significance in different areas of Lao PDR.

Original languageEnglish
Pages (from-to)51-56
Number of pages6
JournalKorean Journal of Parasitology
Issue number1
Publication statusPublished - 2014

All Science Journal Classification (ASJC) codes

  • Parasitology
  • Infectious Diseases


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