Ecologic Risk Factor Investigation of Clusters of Avian Influenza A (H5N1) Virus Infection in Thailand
Identifieur interne : 001825 ( Istex/Curation ); précédent : 001824; suivant : 001826Ecologic Risk Factor Investigation of Clusters of Avian Influenza A (H5N1) Virus Infection in Thailand
Auteurs : Thanawat Tiensin [Pays-Bas] ; Syed Sayeem Uddin Ahmed [Bangladesh] ; Suvichai Rojanasthien ; Thaweesak Songserm ; Parntep Ratanakorn [Thaïlande] ; Kridsada Chaichoun [Thaïlande] ; Wantanee Kalpravidh ; Surapong Wongkasemjit ; Tuangthong Patchimasiri ; Karoon Chanachai ; Weerapong Thanapongtham ; Suwit Chotinan ; Arjan Stegeman [Pays-Bas] ; Mirjam Nielen [Pays-Bas]Source :
- The Journal of Infectious Diseases [ 0022-1899 ] ; 2009.
Abstract
This 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 diagnosed in 1890 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.
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DOI: 10.1086/599207
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Suvichai Rojanasthien<affiliation><mods:affiliation>Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, and</mods:affiliation><wicri:noCountry code="subField">and</wicri:noCountry></affiliation><affiliation><mods:affiliation>Faculty of Veterinary Medicine, Kasetsart University, Kampaengsaen, and</mods:affiliation><wicri:noCountry code="subField">and</wicri:noCountry></affiliation><affiliation><mods:affiliation>Food and Agriculture Organization, Regional Office for Asia and the Pacific, and</mods:affiliation><wicri:noCountry code="subField">and</wicri:noCountry></affiliation><affiliation><mods:affiliation>National Institute of Animal Health, Chatuchak, Bangkok,</mods:affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation><affiliation><mods:affiliation>National Institute of Animal Health, Chatuchak, Bangkok,</mods:affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation><affiliation><mods:affiliation>Department of Livestock Development,</mods:affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation><affiliation><mods:affiliation>Department of Livestock Development,</mods:affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation><affiliation><mods:affiliation>Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, and</mods:affiliation><wicri:noCountry code="subField">and</wicri:noCountry></affiliation>Le document en format XML
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ttiensin@gmail.com</mods:affiliation></affiliation></author><author><name sortKey="Ahmed, Syed Sayeem Uddin" sort="Ahmed, Syed Sayeem Uddin" uniqKey="Ahmed S" first="Syed Sayeem Uddin" last="Ahmed">Syed Sayeem Uddin Ahmed</name><affiliation wicri:level="1"><mods:affiliation>Department of Medicine and Surgery, Chittagong Veterinary and Animal Sciences University, Chittagong, Bangladesh</mods:affiliation><country xml:lang="fr">Bangladesh</country><wicri:regionArea>Department of Medicine and Surgery, Chittagong Veterinary and Animal Sciences University, Chittagong</wicri:regionArea></affiliation></author><author><name sortKey="Rojanasthien, Suvichai" sort="Rojanasthien, Suvichai" uniqKey="Rojanasthien S" first="Suvichai" last="Rojanasthien">Suvichai Rojanasthien</name><affiliation><mods:affiliation>Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, and</mods:affiliation><wicri:noCountry code="subField">and</wicri:noCountry></affiliation></author><author><name sortKey="Songserm, Thaweesak" sort="Songserm, Thaweesak" uniqKey="Songserm T" first="Thaweesak" last="Songserm">Thaweesak Songserm</name><affiliation><mods:affiliation>Faculty of Veterinary Medicine, Kasetsart University, Kampaengsaen, and</mods:affiliation><wicri:noCountry code="subField">and</wicri:noCountry></affiliation></author><author><name sortKey="Ratanakorn, Parntep" sort="Ratanakorn, Parntep" uniqKey="Ratanakorn P" first="Parntep" last="Ratanakorn">Parntep Ratanakorn</name><affiliation wicri:level="1"><mods:affiliation>Faculty of Veterinary Science, Mahidol University, Salaya, Nakhon Pathom, Thailand; and</mods:affiliation><country xml:lang="fr" wicri:curation="lc">Thaïlande</country><wicri:regionArea>Faculty of Veterinary Science, Mahidol University, Salaya, Nakhon Pathom</wicri:regionArea></affiliation></author><author><name sortKey="Chaichoun, Kridsada" sort="Chaichoun, Kridsada" uniqKey="Chaichoun K" first="Kridsada" last="Chaichoun">Kridsada Chaichoun</name><affiliation wicri:level="1"><mods:affiliation>Faculty of Veterinary Science, Mahidol University, Salaya, Nakhon Pathom, Thailand; and</mods:affiliation><country xml:lang="fr" wicri:curation="lc">Thaïlande</country><wicri:regionArea>Faculty of Veterinary Science, Mahidol University, Salaya, Nakhon Pathom</wicri:regionArea></affiliation></author><author><name sortKey="Kalpravidh, Wantanee" sort="Kalpravidh, Wantanee" uniqKey="Kalpravidh W" first="Wantanee" last="Kalpravidh">Wantanee Kalpravidh</name><affiliation><mods:affiliation>Food and Agriculture Organization, Regional Office for Asia and the Pacific, and</mods:affiliation><wicri:noCountry code="subField">and</wicri:noCountry></affiliation></author><author><name sortKey="Wongkasemjit, Surapong" sort="Wongkasemjit, Surapong" uniqKey="Wongkasemjit S" first="Surapong" last="Wongkasemjit">Surapong Wongkasemjit</name><affiliation><mods:affiliation>National Institute of Animal Health, Chatuchak, Bangkok,</mods:affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author><author><name sortKey="Patchimasiri, Tuangthong" sort="Patchimasiri, Tuangthong" uniqKey="Patchimasiri T" first="Tuangthong" last="Patchimasiri">Tuangthong Patchimasiri</name><affiliation><mods:affiliation>National Institute of Animal Health, Chatuchak, Bangkok,</mods:affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author><author><name sortKey="Chanachai, Karoon" sort="Chanachai, Karoon" uniqKey="Chanachai K" first="Karoon" last="Chanachai">Karoon Chanachai</name><affiliation><mods:affiliation>Department of Livestock Development,</mods:affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author><author><name sortKey="Thanapongtham, Weerapong" sort="Thanapongtham, Weerapong" uniqKey="Thanapongtham W" first="Weerapong" last="Thanapongtham">Weerapong Thanapongtham</name><affiliation><mods:affiliation>Department of Livestock Development,</mods:affiliation><wicri:noCountry code="subField"></wicri:noCountry></affiliation></author><author><name sortKey="Chotinan, Suwit" sort="Chotinan, Suwit" uniqKey="Chotinan S" first="Suwit" last="Chotinan">Suwit Chotinan</name><affiliation><mods:affiliation>Faculty of Veterinary Medicine, Chiang Mai University, Chiang Mai, and</mods:affiliation><wicri:noCountry code="subField">and</wicri:noCountry></affiliation></author><author><name sortKey="Stegeman, Arjan" sort="Stegeman, Arjan" uniqKey="Stegeman A" first="Arjan" last="Stegeman">Arjan Stegeman</name><affiliation wicri:level="1"><mods:affiliation>Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands;</mods:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht</wicri:regionArea></affiliation></author><author><name sortKey="Nielen, Mirjam" sort="Nielen, Mirjam" uniqKey="Nielen M" first="Mirjam" last="Nielen">Mirjam Nielen</name><affiliation wicri:level="1"><mods:affiliation>Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht, The Netherlands;</mods:affiliation><country xml:lang="fr" wicri:curation="lc">Pays-Bas</country><wicri:regionArea>Department of Farm Animal Health, Faculty of Veterinary Medicine, Utrecht University, Utrecht</wicri:regionArea></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">The Journal of Infectious Diseases</title><title level="j" type="abbrev">The Journal of Infectious Diseases</title><idno type="ISSN">0022-1899</idno><idno type="eISSN">1537-6613</idno><imprint><publisher>University of Chicago Press</publisher><date type="published">2009</date><biblScope unit="vol">199</biblScope><biblScope unit="issue">12</biblScope><biblScope unit="page" from="1735">1735</biblScope><biblScope unit="page" to="1743">1743</biblScope></imprint><idno type="ISSN">0022-1899</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0022-1899</idno></seriesStmt></fileDesc><profileDesc><textClass></textClass></profileDesc></teiHeader><front><div type="abstract">This 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 diagnosed in 1890 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.</div></front></TEI></record>Pour manipuler ce document sous Unix (Dilib)
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