Serologic evidence of human influenza virus infections in swine populations, Cambodia
Identifieur interne : 000155 ( France/Analysis ); précédent : 000154; suivant : 000156Serologic evidence of human influenza virus infections in swine populations, Cambodia
Auteurs : Sareth Rith [Cambodge] ; Punnaporn Netrabukkana [Australie] ; San Sorn [Cambodge] ; Elizabeth Mumford [Suisse] ; Channa Mey [Cambodge] ; Davun Holl [Australie] ; Flavie Goutard [Cambodge] ; Bunthin Y [Cambodge] ; Stan Fenwick [Australie] ; Ian Robertson [Australie] ; François Roger [France] ; Philippe Buchy [Cambodge]Source :
- Influenza and Other Respiratory Viruses [ 1750-2640 ] ; 2012-05-29.
Abstract
Background This study was conducted from 2006 to 2010 and investigated the seroprevalence of influenza A viruses in Cambodian pigs, including human H1N1, H3N2, 2009 pandemic H1N1 (A(H1N1)pdm09), and highly pathogenic avian H5N1 influenza A viruses. Methods A total of 1147 sera obtained from pigs in Cambodia were tested by haemagglutination inhibition (HI) assays for antibody to human influenza A viruses along with both HI and microneutralization (MN) tests to assess immunological responses to H5N1 virus. The results were compared by year, age, and province. Results Antibodies against a human influenza A virus were detected in 14*9% of samples. A(H1N1)pdm09 virus were dominant over the study period (23*1%), followed by those to human H1N1 (17*3%) and H3N2 subtypes (9*9%). No pigs were serologically positive for avian H5 influenza viruses. The seroprevalence of human H1N1 and H3N2 influenza viruses peaked in 2008, while that of A(H1N1)pdm09 reached a peak in 2010. No significant differences in seroprevalence to human influenza subtypes were observed in different age groups. Conclusions Cambodian pigs were exposed to human strains of influenza A viruses either prior to or during this study. The implications of these high prevalence rates imply human-to-swine influenza virus transmission in Cambodia. Although pigs are mostly raised in small non-commercial farms, our preliminary results provide evidence of sustained human influenza virus circulation in pig populations in Cambodia.
Url:
DOI: 10.1111/j.1750-2659.2012.00382
Affiliations:
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Hal:pasteur-00793266Le document en format XML
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<country>Cambodge</country>
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<author><name sortKey="Holl, Davun" sort="Holl, Davun" uniqKey="Holl D" first="Davun" last="Holl">Davun Holl</name>
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<country>Australie</country>
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<author><name sortKey="Goutard, Flavie" sort="Goutard, Flavie" uniqKey="Goutard F" first="Flavie" last="Goutard">Flavie Goutard</name>
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<desc> <address> <addrLine>BP 983 - 5 , Boulevard Monivong, Phnom Penh</addrLine>
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<country>Cambodge</country>
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</author>
<author><name sortKey="Y, Bunthin" sort="Y, Bunthin" uniqKey="Y B" first="Bunthin" last="Y">Bunthin Y</name>
<affiliation wicri:level="1"><hal:affiliation type="institution" xml:id="struct-54022" status="VALID"> <orgName>Institut Pasteur du Cambodge</orgName>
<desc> <address> <addrLine>BP 983 - 5 , Boulevard Monivong, Phnom Penh</addrLine>
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<orgName type="acronym">RIIP</orgName>
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<country>Cambodge</country>
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</author>
<author><name sortKey="Fenwick, Stan" sort="Fenwick, Stan" uniqKey="Fenwick S" first="Stan" last="Fenwick">Stan Fenwick</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-216503" status="INCOMING"> <orgName>Division of Health Sciences</orgName>
<desc> <address> <addrLine>Murdoch</addrLine>
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<country>Australie</country>
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</author>
<author><name sortKey="Robertson, Ian" sort="Robertson, Ian" uniqKey="Robertson I" first="Ian" last="Robertson">Ian Robertson</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-216503" status="INCOMING"> <orgName>Division of Health Sciences</orgName>
<desc> <address> <addrLine>Murdoch</addrLine>
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<country>Australie</country>
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<author><name sortKey="Roger, Francois" sort="Roger, Francois" uniqKey="Roger F" first="François" last="Roger">François Roger</name>
<affiliation wicri:level="1"><hal:affiliation type="laboratory" xml:id="struct-58556" status="OLD"> <idno type="RNSR">200718216Z</idno>
<orgName>Animal et gestion intégrée des risques</orgName>
<orgName type="acronym">Cirad-Bios-UPR 22 AGIRs</orgName>
<date type="start">2008-03-01</date>
<date type="end">2017-01-01</date>
<desc> <address> <addrLine>Campus international de Baillarguet - TA 30 / E - 34398 Montpellier Cedex 5</addrLine>
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<date type="start">2007-01-01</date>
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<date type="start">1984-06-01</date>
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<country>France</country>
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</author>
<author><name sortKey="Buchy, Philippe" sort="Buchy, Philippe" uniqKey="Buchy P" first="Philippe" last="Buchy">Philippe Buchy</name>
<affiliation wicri:level="1"><hal:affiliation type="institution" xml:id="struct-54022" status="VALID"> <orgName>Institut Pasteur du Cambodge</orgName>
<desc> <address> <addrLine>BP 983 - 5 , Boulevard Monivong, Phnom Penh</addrLine>
<country key="KH"></country>
</address>
<ref type="url">http://www.pasteur-kh.org/</ref>
</desc>
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<orgName type="acronym">RIIP</orgName>
<desc> <address> <addrLine>25, rue du Dr Roux 75724 Paris Cedex 15</addrLine>
<country key="FR"></country>
</address>
<ref type="url">https://research.pasteur.fr/ip-network</ref>
</desc>
</org>
</tutelle>
</tutelles>
</hal:affiliation>
<country>Cambodge</country>
</affiliation>
</author>
</analytic>
<idno type="DOI">10.1111/j.1750-2659.2012.00382</idno>
<series><title level="j">Influenza and Other Respiratory Viruses</title>
<idno type="ISSN">1750-2640</idno>
<imprint><date type="datePub">2012-05-29</date>
</imprint>
</series>
</biblStruct>
</sourceDesc>
</fileDesc>
<profileDesc><textClass><keywords scheme="mix" xml:lang="it"><term>Cambodia</term>
<term>Influenza A viruses</term>
<term>pig</term>
<term>serology</term>
</keywords>
</textClass>
</profileDesc>
</teiHeader>
<front><div type="abstract" xml:lang="en"> <p>Background This study was conducted from 2006 to 2010 and investigated the seroprevalence of influenza A viruses in Cambodian pigs, including human H1N1, H3N2, 2009 pandemic H1N1 (A(H1N1)pdm09), and highly pathogenic avian H5N1 influenza A viruses. Methods A total of 1147 sera obtained from pigs in Cambodia were tested by haemagglutination inhibition (HI) assays for antibody to human influenza A viruses along with both HI and microneutralization (MN) tests to assess immunological responses to H5N1 virus. The results were compared by year, age, and province. Results Antibodies against a human influenza A virus were detected in 14*9% of samples. A(H1N1)pdm09 virus were dominant over the study period (23*1%), followed by those to human H1N1 (17*3%) and H3N2 subtypes (9*9%). No pigs were serologically positive for avian H5 influenza viruses. The seroprevalence of human H1N1 and H3N2 influenza viruses peaked in 2008, while that of A(H1N1)pdm09 reached a peak in 2010. No significant differences in seroprevalence to human influenza subtypes were observed in different age groups. Conclusions Cambodian pigs were exposed to human strains of influenza A viruses either prior to or during this study. The implications of these high prevalence rates imply human-to-swine influenza virus transmission in Cambodia. Although pigs are mostly raised in small non-commercial farms, our preliminary results provide evidence of sustained human influenza virus circulation in pig populations in Cambodia.</p>
</div>
</front>
</TEI>
<affiliations><list><country><li>Australie</li>
<li>Cambodge</li>
<li>France</li>
<li>Suisse</li>
</country>
</list>
<tree><country name="Cambodge"><noRegion><name sortKey="Rith, Sareth" sort="Rith, Sareth" uniqKey="Rith S" first="Sareth" last="Rith">Sareth Rith</name>
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<name sortKey="Buchy, Philippe" sort="Buchy, Philippe" uniqKey="Buchy P" first="Philippe" last="Buchy">Philippe Buchy</name>
<name sortKey="Goutard, Flavie" sort="Goutard, Flavie" uniqKey="Goutard F" first="Flavie" last="Goutard">Flavie Goutard</name>
<name sortKey="Mey, Channa" sort="Mey, Channa" uniqKey="Mey C" first="Channa" last="Mey">Channa Mey</name>
<name sortKey="Sorn, San" sort="Sorn, San" uniqKey="Sorn S" first="San" last="Sorn">San Sorn</name>
<name sortKey="Y, Bunthin" sort="Y, Bunthin" uniqKey="Y B" first="Bunthin" last="Y">Bunthin Y</name>
</country>
<country name="Australie"><noRegion><name sortKey="Netrabukkana, Punnaporn" sort="Netrabukkana, Punnaporn" uniqKey="Netrabukkana P" first="Punnaporn" last="Netrabukkana">Punnaporn Netrabukkana</name>
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<name sortKey="Fenwick, Stan" sort="Fenwick, Stan" uniqKey="Fenwick S" first="Stan" last="Fenwick">Stan Fenwick</name>
<name sortKey="Holl, Davun" sort="Holl, Davun" uniqKey="Holl D" first="Davun" last="Holl">Davun Holl</name>
<name sortKey="Robertson, Ian" sort="Robertson, Ian" uniqKey="Robertson I" first="Ian" last="Robertson">Ian Robertson</name>
</country>
<country name="Suisse"><noRegion><name sortKey="Mumford, Elizabeth" sort="Mumford, Elizabeth" uniqKey="Mumford E" first="Elizabeth" last="Mumford">Elizabeth Mumford</name>
</noRegion>
</country>
<country name="France"><noRegion><name sortKey="Roger, Francois" sort="Roger, Francois" uniqKey="Roger F" first="François" last="Roger">François Roger</name>
</noRegion>
</country>
</tree>
</affiliations>
</record>
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