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Comparison of 2016-17 and Previous Epizootics of Highly Pathogenic Avian Influenza H5 Guangdong Lineage in Europe.

Alarcon, Pablo; Brouwer, Adam; Venkatesh, Divya; Duncan, Daisy; Dovas, Chrysostomos I; Georgiades, George; Monne, Isabella; Fusaro, Alice; Dan, Adam; Smietanka, Krzysztof; Ragias, Vassilios; Breed, Andrew C; Chassalevris, Taxiarchis; Goujgoulova, Gabriela; Hjulsager, Charlotte Kristiane; Ryan, Eoin; Sánchez, Azucena; Niqueux, Eric; Tammiranta, Niina; Zohari, Siamak; Stroud, David A; Savic, Vladimir; Lewis, Nicola S; Brown, Ian H.
Emerg Infect Dis; 24(12): 2270-2283, 2018 12.
Artículo en Inglés | MEDLINE | ID: mdl-30457528
We analyzed the highly pathogenic avian influenza (HPAI) H5 epizootic of 2016-17 in Europe by epidemiologic and genetic characteristics and compared it with 2 previous epizootics caused by the same H5 Guangdong lineage. The 2016-17 epizootic was the largest in Europe by number of countries and farms affected and greatest diversity of wild birds infected. We observed significant differences among the 3 epizootics regarding region affected, epidemic curve, seasonality, and outbreak duration, making it difficult to predict future HPAI epizootics. However, we know that in 2005-06 and 2016-17 the initial peak of wild bird detections preceded the peak of poultry outbreaks within Europe. Phylogenetic analysis of 2016-17 viruses indicates 2 main pathways into Europe. Our findings highlight the need for global surveillance of viral changes to inform disease preparedness, detection, and control.