Epidemiology of Taenia solium in Nepal: is it influenced by the social characteristics of the population and the presence of Taenia asiatica?

Brecht Devleesschauwer, Arjun Aryal, Durga Datt Joshi, Suman Rijal, Jeevan Bahadur Sherchand, Nicolas Praet, Niko Speybroeck, Luc Duchateau, Jozef Vercruysse, Pierre Dorny

Research output: Contribution to journalA1: Web of Science-article

Abstract

The transmission of the zoonotic pork tapeworms Taenia solium and T. asiatica depends on a combination of specific risk factors, such as open defecation, backyard pig raising and the consumption of raw or undercooked pork and viscera. A community-based survey was conducted among 289 households in south-eastern Nepal to study the heterogeneity of these risk factor frequencies as a function of the social composition of the population. The frequency of open defecation, backyard pig raising and pork consumption differed significantly (P <0.005) among the different coexisting caste and ethnic groups. In the same survey, the taeniosis prevalence was examined among the different groups. Tapeworm carriers were identified at a high prevalence among the Dum, one of the most disadvantaged communities of Nepal. A PCR-RFLP assay revealed that all collected tapeworm specimens were T. asiatica, a species thus far not known to occur in South Asia. These results can help to understand the epidemiology of T. solium in Nepal, which appears to be more complex than thought so far.
Original languageEnglish
JournalTropical Medicine and International Health
Volume17
Issue number8
Pages (from-to)1019-1022
Number of pages4
ISSN1360-2276
DOIs
Publication statusPublished - 2012

Keywords

  • Helminthic diseases
  • Animal diseases
  • Zoonoses
  • Taeniasis
  • Taenia solium
  • Taenia asiatica
  • Pigs
  • Epidemiology
  • Prevalence
  • Disease transmission
  • Risk factors
  • Defecation
  • Food consumption
  • Meat
  • Ethnic groups
  • Poverty
  • Nepal
  • Asia-South

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