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

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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.
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Language: English

Document Type: Research Article

Affiliations: 1:  Central Veterinary Hospital, Kathmandu, Nepal 2:  National Zoonoses and Food Hygiene Research Centre, Kathmandu, Nepal 3:  Department of Internal Medicine, B.P. Koirala Institute of Health Sciences, Dharan, Nepal 4:  Department of Clinical Microbiology and Health Research Laboratory, Institute of Medicine, Tribhuvan University, Kathmandu, Nepal 5:  Department of Biomedical Sciences, Institute of Tropical Medicine, Antwerp, Belgium 6:  Institute of Health and Society, Université catholique de Louvain, Brussels, Belgium 7:  Department of Comparative Physiology and Biometrics, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium 8:  Department of Virology, Parasitology and Immunology, Faculty of Veterinary Medicine, Ghent University, Merelbeke, Belgium

Publication date: August 1, 2012

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