Lebarbenchon Camille auteur aut IRD Chang C. M. auteur aut IRD Grandhomme V. auteur aut IRD Dietrich M. auteur aut IRD Kayser Y. auteur aut IRD Elguero Eric auteur aut IRD Renaud François auteur aut IRD Thomas F auteur aut IRD van der Werf S. auteur aut IRD Gauthier-Clerc M. auteur aut IRD text journalArticle eng Situated at the crossroads of numerous migratory routes of Palaearctic birds, the Camargue is considered a high-risk area for the introduction and transmission of numerous avian-borne pathogens. We investigated the epidemiologic cycles of avian influenza viruses (AIVs) in the local bird community by performing regular sampling on a large variety of bird species during 11 consecutive months in 2006-07. To detect the presence of AIV, SYBR green reverse transcriptase PCR targeting the M gene was performed on 2901 samples from 66 bird species. A clear seasonal pattern of AIV circulation in ducks was observed during autumn and winter, with higher prevalence rates in early fall. Our results also support an absence of circulation of AIV in passerine birds during spring and the wintering periods. Finally, even if the prevalence of infection was very low, AIVs were found in gulls in breeding colonies, indicating a possible specific circulation in spring in these birds. specialized migratory ducks wintering period Anseriformes Passeriformes Charadriiformes Anas querquedula 052 080 54 1 446-449 2010 0005-2086 https://www.documentation.ird.fr/hor/PAR00004855 0005-2086 https://www.documentation.ird.fr/hor/PAR00004855 IRD - Base Horizon / Pleins textes 2010-05-03 2017-08-23 PAR00004855 fre