Assessment of seasonality of influenza in swine using field submissions to a diagnostic laboratory in Ontario between 2007 and 2012.
Identifieur interne : 000304 ( Main/Exploration ); précédent : 000303; suivant : 000305Assessment of seasonality of influenza in swine using field submissions to a diagnostic laboratory in Ontario between 2007 and 2012.
Auteurs : Zvonimir Poljak [Canada] ; Susy Carman ; Beverly McewenSource :
- Influenza and other respiratory viruses [ 1750-2659 ] ; 2014.
Descripteurs français
- KwdFr :
- Animaux, Humains, Infections à Orthomyxoviridae (médecine vétérinaire), Infections à Orthomyxoviridae (virologie), Infections à Orthomyxoviridae (épidémiologie), Maladies des porcs (virologie), Maladies des porcs (épidémiologie), Ontario (épidémiologie), Orthomyxoviridae (), Orthomyxoviridae (isolement et purification), Saisons, Suidae, Techniques de laboratoire clinique.
- MESH :
- isolement et purification : Orthomyxoviridae.
- médecine vétérinaire : Infections à Orthomyxoviridae.
- virologie : Infections à Orthomyxoviridae, Maladies des porcs.
- épidémiologie : Infections à Orthomyxoviridae, Maladies des porcs, Ontario.
- Animaux, Humains, Orthomyxoviridae, Saisons, Suidae, Techniques de laboratoire clinique.
English descriptors
- KwdEn :
- Animals, Clinical Laboratory Techniques, Humans, Ontario (epidemiology), Orthomyxoviridae (classification), Orthomyxoviridae (isolation & purification), Orthomyxoviridae Infections (epidemiology), Orthomyxoviridae Infections (veterinary), Orthomyxoviridae Infections (virology), Seasons, Swine, Swine Diseases (epidemiology), Swine Diseases (virology).
- MESH :
- geographic , epidemiology : Ontario.
- classification : Orthomyxoviridae.
- epidemiology : Orthomyxoviridae Infections, Swine Diseases.
- isolation & purification : Orthomyxoviridae.
- veterinary : Orthomyxoviridae Infections.
- virology : Orthomyxoviridae Infections, Swine Diseases.
- Animals, Clinical Laboratory Techniques, Humans, Seasons, Swine.
Abstract
BACKGROUND
Seasonality of any infectious disease is important for its control and monitoring. While influenza seasonality in people has been evaluated extensively, this question has not been studied well in swine populations.
OBJECTIVE
The goal of this study was to investigate seasonality of influenza in swine, using diagnostic submissions to a diagnostic laboratory.
METHODS
Two thousand seven hundred and eleven virological tests within 685 submissions and 5471 serological tests within 193 submissions in Ontario swine between 2007 and 2012 were included in the study and converted to total monthly number of virological and serological submissions, and the number of positive submissions. Data were analyzed by time-series decomposition, fixed-effect Poisson, random-effect Poisson regression with month as uncorrelated and correlated random effects.
RESULTS
All approaches identified seasonality in virological submissions (P < 0.02) with peak in January and April, and a trough in July, but were not able to detect seasonality of influenza-positive virological submissions (P > 0.13). Seasonality of positive serological submissions was identified only if independence between months was assumed (P < 0.03). Almost 50% of serological submissions had evidence of exposure to H3N2 and H1N1.
CONCLUSIONS
Thus, this study identified evidence of seasonality in influenza-like disease in swine herds, but not in circulation of influenza virus. Evidence of seasonality in exposure to influenza was dependent on assumptions of between-month correlation. High exposure to H3N2 and H1N1 subtypes warrants more detailed investigation of within-herd influenza virus circulation. The study provides initial insight into seasonality of influenza in swine and should be followed with herd-level studies.
DOI: 10.1111/irv.12248
PubMed: 24725968
Affiliations:
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Le document en format XML
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Mcewen</name></author></titleStmt><publicationStmt><idno type="wicri:source">PubMed</idno><date when="2014">2014</date><idno type="RBID">pubmed:24725968</idno><idno type="pmid">24725968</idno><idno type="doi">10.1111/irv.12248</idno><idno type="wicri:Area/Main/Corpus">000276</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Corpus" wicri:corpus="PubMed">000276</idno><idno type="wicri:Area/Main/Curation">000276</idno><idno type="wicri:explorRef" wicri:stream="Main" wicri:step="Curation">000276</idno><idno type="wicri:Area/Main/Exploration">000276</idno></publicationStmt><sourceDesc><biblStruct><analytic><title xml:lang="en">Assessment of seasonality of influenza in swine using field submissions to a diagnostic laboratory in Ontario between 2007 and 2012.</title><author><name sortKey="Poljak, Zvonimir" sort="Poljak, Zvonimir" uniqKey="Poljak Z" first="Zvonimir" last="Poljak">Zvonimir Poljak</name><affiliation wicri:level="1"><nlm:affiliation>Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, ON, Canada.</nlm:affiliation><country xml:lang="fr">Canada</country><wicri:regionArea>Department of Population Medicine, Ontario Veterinary College, University of Guelph, Guelph, ON</wicri:regionArea><wicri:noRegion>ON</wicri:noRegion></affiliation></author><author><name sortKey="Carman, Susy" sort="Carman, Susy" uniqKey="Carman S" first="Susy" last="Carman">Susy Carman</name></author><author><name sortKey="Mcewen, Beverly" sort="Mcewen, Beverly" uniqKey="Mcewen B" first="Beverly" last="Mcewen">Beverly Mcewen</name></author></analytic><series><title level="j">Influenza and other respiratory viruses</title><idno type="eISSN">1750-2659</idno><imprint><date when="2014" type="published">2014</date></imprint></series></biblStruct></sourceDesc></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Animals</term><term>Clinical Laboratory Techniques</term><term>Humans</term><term>Ontario (epidemiology)</term><term>Orthomyxoviridae (classification)</term><term>Orthomyxoviridae (isolation & purification)</term><term>Orthomyxoviridae Infections (epidemiology)</term><term>Orthomyxoviridae Infections (veterinary)</term><term>Orthomyxoviridae Infections (virology)</term><term>Seasons</term><term>Swine</term><term>Swine Diseases (epidemiology)</term><term>Swine Diseases (virology)</term></keywords><keywords scheme="KwdFr" xml:lang="fr"><term>Animaux</term><term>Humains</term><term>Infections à Orthomyxoviridae (médecine vétérinaire)</term><term>Infections à Orthomyxoviridae (virologie)</term><term>Infections à Orthomyxoviridae (épidémiologie)</term><term>Maladies des porcs (virologie)</term><term>Maladies des porcs (épidémiologie)</term><term>Ontario (épidémiologie)</term><term>Orthomyxoviridae ()</term><term>Orthomyxoviridae (isolement et purification)</term><term>Saisons</term><term>Suidae</term><term>Techniques de laboratoire clinique</term></keywords><keywords scheme="MESH" type="geographic" qualifier="epidemiology" xml:lang="en"><term>Ontario</term></keywords><keywords scheme="MESH" qualifier="classification" xml:lang="en"><term>Orthomyxoviridae</term></keywords><keywords scheme="MESH" qualifier="epidemiology" xml:lang="en"><term>Orthomyxoviridae Infections</term><term>Swine Diseases</term></keywords><keywords scheme="MESH" qualifier="isolation & purification" xml:lang="en"><term>Orthomyxoviridae</term></keywords><keywords scheme="MESH" qualifier="isolement et purification" xml:lang="fr"><term>Orthomyxoviridae</term></keywords><keywords scheme="MESH" qualifier="médecine vétérinaire" xml:lang="fr"><term>Infections à Orthomyxoviridae</term></keywords><keywords scheme="MESH" qualifier="veterinary" xml:lang="en"><term>Orthomyxoviridae Infections</term></keywords><keywords scheme="MESH" qualifier="virologie" xml:lang="fr"><term>Infections à Orthomyxoviridae</term><term>Maladies des porcs</term></keywords><keywords scheme="MESH" qualifier="virology" xml:lang="en"><term>Orthomyxoviridae Infections</term><term>Swine Diseases</term></keywords><keywords scheme="MESH" qualifier="épidémiologie" xml:lang="fr"><term>Infections à Orthomyxoviridae</term><term>Maladies des porcs</term><term>Ontario</term></keywords><keywords scheme="MESH" xml:lang="en"><term>Animals</term><term>Clinical Laboratory Techniques</term><term>Humans</term><term>Seasons</term><term>Swine</term></keywords><keywords scheme="MESH" xml:lang="fr"><term>Animaux</term><term>Humains</term><term>Orthomyxoviridae</term><term>Saisons</term><term>Suidae</term><term>Techniques de laboratoire clinique</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract" xml:lang="en"><p><b>BACKGROUND</b></p><p>Seasonality of any infectious disease is important for its control and monitoring. While influenza seasonality in people has been evaluated extensively, this question has not been studied well in swine populations.</p></div><div type="abstract" xml:lang="en"><p><b>OBJECTIVE</b></p><p>The goal of this study was to investigate seasonality of influenza in swine, using diagnostic submissions to a diagnostic laboratory.</p></div><div type="abstract" xml:lang="en"><p><b>METHODS</b></p><p>Two thousand seven hundred and eleven virological tests within 685 submissions and 5471 serological tests within 193 submissions in Ontario swine between 2007 and 2012 were included in the study and converted to total monthly number of virological and serological submissions, and the number of positive submissions. Data were analyzed by time-series decomposition, fixed-effect Poisson, random-effect Poisson regression with month as uncorrelated and correlated random effects.</p></div><div type="abstract" xml:lang="en"><p><b>RESULTS</b></p><p>All approaches identified seasonality in virological submissions (P < 0.02) with peak in January and April, and a trough in July, but were not able to detect seasonality of influenza-positive virological submissions (P > 0.13). Seasonality of positive serological submissions was identified only if independence between months was assumed (P < 0.03). Almost 50% of serological submissions had evidence of exposure to H3N2 and H1N1.</p></div><div type="abstract" xml:lang="en"><p><b>CONCLUSIONS</b></p><p>Thus, this study identified evidence of seasonality in influenza-like disease in swine herds, but not in circulation of influenza virus. Evidence of seasonality in exposure to influenza was dependent on assumptions of between-month correlation. High exposure to H3N2 and H1N1 subtypes warrants more detailed investigation of within-herd influenza virus circulation. The study provides initial insight into seasonality of influenza in swine and should be followed with herd-level studies.</p></div></front></TEI><pubmed><MedlineCitation Status="MEDLINE" Owner="NLM"><PMID Version="1">24725968</PMID><DateCompleted><Year>2015</Year><Month>01</Month><Day>24</Day></DateCompleted><DateRevised><Year>2020</Year><Month>03</Month><Day>05</Day></DateRevised><Article PubModel="Print-Electronic"><Journal><ISSN IssnType="Electronic">1750-2659</ISSN><JournalIssue CitedMedium="Internet"><Volume>8</Volume><Issue>4</Issue><PubDate><Year>2014</Year><Month>Jul</Month></PubDate></JournalIssue><Title>Influenza and other respiratory viruses</Title><ISOAbbreviation>Influenza Other Respir Viruses</ISOAbbreviation></Journal><ArticleTitle>Assessment of seasonality of influenza in swine using field submissions to a diagnostic laboratory in Ontario between 2007 and 2012.</ArticleTitle><Pagination><MedlinePgn>482-92</MedlinePgn></Pagination><ELocationID EIdType="doi" ValidYN="Y">10.1111/irv.12248</ELocationID><Abstract><AbstractText Label="BACKGROUND" NlmCategory="BACKGROUND">Seasonality of any infectious disease is important for its control and monitoring. While influenza seasonality in people has been evaluated extensively, this question has not been studied well in swine populations.</AbstractText><AbstractText Label="OBJECTIVE" NlmCategory="OBJECTIVE">The goal of this study was to investigate seasonality of influenza in swine, using diagnostic submissions to a diagnostic laboratory.</AbstractText><AbstractText Label="METHODS" NlmCategory="METHODS">Two thousand seven hundred and eleven virological tests within 685 submissions and 5471 serological tests within 193 submissions in Ontario swine between 2007 and 2012 were included in the study and converted to total monthly number of virological and serological submissions, and the number of positive submissions. Data were analyzed by time-series decomposition, fixed-effect Poisson, random-effect Poisson regression with month as uncorrelated and correlated random effects.</AbstractText><AbstractText Label="RESULTS" NlmCategory="RESULTS">All approaches identified seasonality in virological submissions (P < 0.02) with peak in January and April, and a trough in July, but were not able to detect seasonality of influenza-positive virological submissions (P > 0.13). Seasonality of positive serological submissions was identified only if independence between months was assumed (P < 0.03). Almost 50% of serological submissions had evidence of exposure to H3N2 and H1N1.</AbstractText><AbstractText Label="CONCLUSIONS" NlmCategory="CONCLUSIONS">Thus, this study identified evidence of seasonality in influenza-like disease in swine herds, but not in circulation of influenza virus. Evidence of seasonality in exposure to influenza was dependent on assumptions of between-month correlation. 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IdType="pubmed">16836834</ArticleId></ArticleIdList></Reference></ReferenceList></PubmedData></pubmed><affiliations><list><country><li>Canada</li></country></list><tree><noCountry><name sortKey="Carman, Susy" sort="Carman, Susy" uniqKey="Carman S" first="Susy" last="Carman">Susy Carman</name><name sortKey="Mcewen, Beverly" sort="Mcewen, Beverly" uniqKey="Mcewen B" first="Beverly" last="Mcewen">Beverly Mcewen</name></noCountry><country name="Canada"><noRegion><name sortKey="Poljak, Zvonimir" sort="Poljak, Zvonimir" uniqKey="Poljak Z" first="Zvonimir" last="Poljak">Zvonimir Poljak</name></noRegion></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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