Korean J Parasitol.  2012 Jun;50(2):173-176. 10.3347/kjp.2012.50.2.173.

High Prevalence of Opisthorchis viverrini Infection in a Riparian Population in Takeo Province, Cambodia

Affiliations
  • 1Department of Environmental Medical Biology, Institute of Tropical Medicine and Arthropods of Medical Importance Resource Bank, Yonsei University College of Medicine, Seoul 120-752, Korea.
  • 2Department of Parasitology and Tropical Medicine, Seoul National University College of Medicine, Seoul 110-799, Korea. cjy@snu.ac.kr
  • 3Department of Parasitology and Tropical Medicine, Seoul National University Bundang Hospital, Seongnam 463-707, Korea.
  • 4Department of Parasitology and Institute of Health Sciences, Gyeongsang National University School of Medicine, Jinju 660-751, Korea.
  • 5Department of Parasitology and Medical Research Institute, Chungbuk National University School of Medicine, Cheongju 361-763, Korea.
  • 6Korea Association of Health Promotion, Seoul 157-705, Korea.
  • 7Centre for Parasitology, Entomology, and Malaria Control, Phnom Penh, Cambodia.

Abstract

Opisthorchis viverrini infection was found to be highly prevalent in 3 riverside villages (Ang Svay Chek A, B, and C) of the Prey Kabas District, Takeo Province. This area is located in the southern part of Cambodia, where the recovery of adult O. viverrini worms was recently reported. From May 2006 until May 2010, fecal examinations were performed on a total of 1,799 villagers using the Kato-Katz thick smear technique. In the 3 villages, the overall positive rate for helminth eggs ranged from 51.7 to 59.0% (av. 57.4%), and the percentage positive for O. viverrini was 46.4-50.6% (47.5%). Other helminths detected included hookworms (13.2%), echinostomes (2.9%), Trichuris trichiura (1.3%), Ascaris lumbricoides (0.6%), and Taenia spp. (0.06%). The prevalence of O. viverrini eggs appeared to reflect a lower infection in younger individuals (<20 years) than in the adult population (>20 years). Men (50.4%) revealed a significantly higher (P=0.02) prevalence than women (44.3%). The Ang Svay Chek villages of the Prey Kabas District, Takeo Province, Cambodia have been confirmed to be a highly endemic area for human O. viverrini infection.

Keyword

Opisthorchis viverrini; opisthorchiasis; trematode; prevalence; Cambodia (Takeo)

MeSH Terms

Adolescent
Adult
Aged, 80 and over
Animals
Cambodia/epidemiology
Child
Child, Preschool
Coinfection/epidemiology
Feces/parasitology
Female
Humans
Infant
Male
Middle Aged
Opisthorchiasis/*epidemiology
Opisthorchis/*isolation & purification
Prevalence
Rural Population
Young Adult
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