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dc.contributor.authorThanawat Tiensinen_US
dc.contributor.authorSyed Sayeem Uddin Ahmeden_US
dc.contributor.authorSuvichai Rojanasthienen_US
dc.contributor.authorThaweesak Songsermen_US
dc.contributor.authorParntep Ratanakornen_US
dc.contributor.authorKridsada Chaichounen_US
dc.contributor.authorWantanee Kalpravidhen_US
dc.contributor.authorSurapong Wongkasemjiten_US
dc.contributor.authorTuangthong Patchimasirien_US
dc.contributor.authorKaroon Chanachaien_US
dc.contributor.authorWeerapong Thanapongthamen_US
dc.contributor.authorSuwit Chotinanen_US
dc.contributor.authorArjan Stegemanen_US
dc.contributor.authorMirjam Nielenen_US
dc.contributor.otherUtrecht Universityen_US
dc.contributor.otherDepartment of Livestock Developmenten_US
dc.contributor.otherFood and Agriculture Organizationen_US
dc.contributor.otherThailand National Institute of Animal Healthen_US
dc.contributor.otherChiang Mai Universityen_US
dc.contributor.otherKasetsart Universityen_US
dc.contributor.otherMahidol Universityen_US
dc.contributor.otherChittagong Veterinary and Animal Sciences Universityen_US
dc.identifier.citationJournal of Infectious Diseases. Vol.199, No.12 (2009), 1735-1743en_US
dc.description.abstractThis study was conducted to investigate space and time clusters of highly pathogenic avian influenza A (H5N1) virus infection and to determine risk factors at the subdistrict level in Thailand. Highly pathogenic avian influenza A (H5N1) was diagnosedin1890 poultry flocks located in 953 subdistricts during 2004-2007. The ecologic risk for H5N1 virus infection was assessed on the basis of a spatial-based case-control study involving 824 case subdistricts and 3296 control subdistricts from 6 study periods. Risk factors investigated in clustered areas of H5N1 included human and animal demographic characteristics, poultry production systems, and wild birds and their habitats. Six variables remained statistically significant in the final model: flock density of backyard chickens (odds ratio [OR], 0.98), flock density of fighting cocks (OR, 1.02), low and high human density (OR, 0.60), presence of quail flocks (OR, 1.21), free-grazing duck flocks (OR, 2.17), and a poultry slaughterhouse (OR, 1.33). We observed a strong association between subdistricts with H5N1 virus-infected poultry flocks and evidence of prior and concomitant H5N1 infection in wild birds in the same subdistrict. © 2009 by the Infectious Diseases Society of America.en_US
dc.rightsMahidol Universityen_US
dc.titleEcologic risk factor investigation of clusters of avian influenza a (H5N1) virus infection in Thailanden_US
Appears in Collections:Scopus 2006-2010

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