Publication: Serologic study of pig-associated viral zoonoses in Laos
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Issued Date
2012-06-01
Resource Type
ISSN
00029637
Other identifier(s)
2-s2.0-84862167826
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Mahidol University
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SCOPUS
Bibliographic Citation
American Journal of Tropical Medicine and Hygiene. Vol.86, No.6 (2012), 1077-1084
Suggested Citation
James V. Conlan, Khamphouth Vongxay, Richard G. Jarman, Robert V. Gibbons, Ross A. Lunt, Stanley Fenwick, R. C.Andrew Thompson, Stuart D. Blacksell Serologic study of pig-associated viral zoonoses in Laos. American Journal of Tropical Medicine and Hygiene. Vol.86, No.6 (2012), 1077-1084. doi:10.4269/ajtmh.2012.11-0195 Retrieved from: https://repository.li.mahidol.ac.th/handle/123456789/14315
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Title
Serologic study of pig-associated viral zoonoses in Laos
Abstract
We conducted a serologic survey of four high-priority pig-associated viral zoonoses, Japanese encephalitis virus (JEV), hepatitis E virus (HEV), Nipah virus (NiV), and swine influenza virus (SIV), in Laos. We collected blood from pigs at slaughter during May 2008-January 2009 in four northern provinces. Japanese encephalitis virus hemagglutination inhibition seroprevalence was 74.7% (95% confidence interval [CI] = 71.5-77.9%), JEV IgM seroprevalence was 2.3% (95% CI = 1.2-3.2%), and HEV seroprevalence was 21.1% (95% CI = 18.1-24.0%). Antibodies to SIV were detected in 1.8% (95% CI = 0.8-2.8%) of pigs by screening enzyme-linked immunosorbent assay, and only subtype H3N2 was detected by hemagglutination inhibition in two animals with an inconclusive enzyme-linked immunosorbent assay result. No NiV antibody-positive pigs were detected. Our evidence indicates that peak JEV and HEV transmission coincides with the start of the monsoonal wet season and poses the greatest risk for human infection. Copyright © 2012 by The American Society of Tropical Medicine and Hygiene.