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...

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Autores principales:	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
Formato:	article
Lenguaje:	EN
Publicado:	Public Library of Science (PLoS) 2012
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/ae06db60aff44c809b7e1939f7728dbc
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spelling	oai:doaj.org-article:ae06db60aff44c809b7e1939f7728dbc2021-11-18T08:09:36ZBirds and viruses at a crossroad--surveillance of influenza A virus in Portuguese waterfowl.1932-620310.1371/journal.pone.0049002https://doaj.org/article/ae06db60aff44c809b7e1939f7728dbc2012-01-01T00:00:00Zhttps://www.ncbi.nlm.nih.gov/pmc/articles/pmid/23145046/?tool=EBIhttps://doaj.org/toc/1932-6203During 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.Conny TolfDaniel BengtssonDavid RodriguesNeus Latorre-MargalefMichelle WilleMaria Ester FigueiredoMonika Jankowska-HjortaasAnna GermundssonPierre-Yves DubyCamille LebarbenchonMichel Gauthier-ClercBjörn OlsenJonas WaldenströmPublic Library of Science (PLoS)articleMedicineRScienceQENPLoS ONE, Vol 7, Iss 11, p e49002 (2012)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q 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.
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.
format	article
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
title	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_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_sort	birds and viruses at a crossroad--surveillance of influenza a virus in portuguese waterfowl.
publisher	Public Library of Science (PLoS)
publishDate	2012
url	https://doaj.org/article/ae06db60aff44c809b7e1939f7728dbc
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Birds and viruses at a crossroad--surveillance of influenza A virus in Portuguese waterfowl.

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