Birds and viruses at a crossroad--surveillance of influenza A virus in Portuguese waterfowl.
During recent years, extensive amounts of data have become available regarding influenza A virus (IAV) in wild birds in northern Europe, while information from southern Europe is more limited. Here, we present an IAV surveillance study conducted in western Portugal 2008-2009, analyzing 1653 samples...
| Main Authors: | , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Public Library of Science (PLoS)
2012-01-01
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| Series: | PLoS ONE |
| Online Access: | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23145046/?tool=EBI |
| _version_ | 1818722003215974400 |
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| author | Conny Tolf Daniel Bengtsson David Rodrigues Neus Latorre-Margalef Michelle Wille Maria Ester Figueiredo Monika Jankowska-Hjortaas Anna Germundsson Pierre-Yves Duby Camille Lebarbenchon Michel Gauthier-Clerc Björn Olsen Jonas Waldenström |
| author_facet | Conny Tolf Daniel Bengtsson David Rodrigues Neus Latorre-Margalef Michelle Wille Maria Ester Figueiredo Monika Jankowska-Hjortaas Anna Germundsson Pierre-Yves Duby Camille Lebarbenchon Michel Gauthier-Clerc Björn Olsen Jonas Waldenström |
| author_sort | Conny Tolf |
| collection | DOAJ |
| description | During recent years, extensive amounts of data have become available regarding influenza A virus (IAV) in wild birds in northern Europe, while information from southern Europe is more limited. Here, we present an IAV surveillance study conducted in western Portugal 2008-2009, analyzing 1653 samples from six different species of waterfowl, with the majority of samples taken from Mallards (Anas platyrhynchos). Overall 4.4% of sampled birds were infected. The sampling results revealed a significant temporal variation in the IAV prevalence, including a pronounced peak among predominantly young birds in June, indicating that IAV circulate within breeding populations in the wetlands of western Portugal. The H10N7 and H9N2 subtypes were predominant among isolated viruses. Phylogenetic analyses of the hemagglutinin and neuraminidase sequences of H10N7, H9N2 and H11N3 virus showed that sequences from Portugal were closely related to viral sequences from Central Europe as well as to IAVs isolated in the southern parts of Africa, reflecting Portugal's position on the European-African bird migratory flyway. This study highlights the importance of Portugal as a migratory crossroad for IAV, connecting breeding stationary waterfowl with birds migrating between continents which enable transmission and spread of IAV. |
| first_indexed | 2024-12-17T20:47:43Z |
| format | Article |
| id | doaj.art-ae06db60aff44c809b7e1939f7728dbc |
| institution | Directory Open Access Journal |
| issn | 1932-6203 |
| language | English |
| last_indexed | 2024-12-17T20:47:43Z |
| publishDate | 2012-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj.art-ae06db60aff44c809b7e1939f7728dbc2022-12-21T21:33:07ZengPublic Library of Science (PLoS)PLoS ONE1932-62032012-01-01711e4900210.1371/journal.pone.0049002Birds and viruses at a crossroad--surveillance of influenza A virus in Portuguese waterfowl.Conny TolfDaniel BengtssonDavid RodriguesNeus Latorre-MargalefMichelle WilleMaria Ester FigueiredoMonika Jankowska-HjortaasAnna GermundssonPierre-Yves DubyCamille LebarbenchonMichel Gauthier-ClercBjörn OlsenJonas WaldenströmDuring recent years, extensive amounts of data have become available regarding influenza A virus (IAV) in wild birds in northern Europe, while information from southern Europe is more limited. Here, we present an IAV surveillance study conducted in western Portugal 2008-2009, analyzing 1653 samples from six different species of waterfowl, with the majority of samples taken from Mallards (Anas platyrhynchos). Overall 4.4% of sampled birds were infected. The sampling results revealed a significant temporal variation in the IAV prevalence, including a pronounced peak among predominantly young birds in June, indicating that IAV circulate within breeding populations in the wetlands of western Portugal. The H10N7 and H9N2 subtypes were predominant among isolated viruses. Phylogenetic analyses of the hemagglutinin and neuraminidase sequences of H10N7, H9N2 and H11N3 virus showed that sequences from Portugal were closely related to viral sequences from Central Europe as well as to IAVs isolated in the southern parts of Africa, reflecting Portugal's position on the European-African bird migratory flyway. This study highlights the importance of Portugal as a migratory crossroad for IAV, connecting breeding stationary waterfowl with birds migrating between continents which enable transmission and spread of IAV.https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23145046/?tool=EBI |
| spellingShingle | Conny Tolf Daniel Bengtsson David Rodrigues Neus Latorre-Margalef Michelle Wille Maria Ester Figueiredo Monika Jankowska-Hjortaas Anna Germundsson Pierre-Yves Duby Camille Lebarbenchon Michel Gauthier-Clerc Björn Olsen Jonas Waldenström Birds and viruses at a crossroad--surveillance of influenza A virus in Portuguese waterfowl. PLoS ONE |
| title | Birds and viruses at a crossroad--surveillance of influenza A virus in Portuguese waterfowl. |
| title_full | Birds and viruses at a crossroad--surveillance of influenza A virus in Portuguese waterfowl. |
| title_fullStr | Birds and viruses at a crossroad--surveillance of influenza A virus in Portuguese waterfowl. |
| title_full_unstemmed | Birds and viruses at a crossroad--surveillance of influenza A virus in Portuguese waterfowl. |
| title_short | Birds and viruses at a crossroad--surveillance of influenza A virus in Portuguese waterfowl. |
| title_sort | birds and viruses at a crossroad surveillance of influenza a virus in portuguese waterfowl |
| url | https://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23145046/?tool=EBI |
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