Incursion of Highly Pathogenic Avian Influenza A(H5N1) Clade 2.3.4.4b Virus, Brazil, 2023.

Andreina Carvalho de Araújo,Laura Morais Nascimento Silva,Andrew Yong Cho, Márcio Repenning,Deyvid Amgarten, Ana Paula de Moraes, Fernanda Malta, Michael Miller, Erick G Dorlass, Soledad Palameta, Daniele Bruna L Oliveira,Jansen de Araújo,Clarice Weis Arns, Edison L Durigon, João Renato R Pinho,Dong-Hun Lee,Helena Lage Ferreira

Emerging infectious diseases（2024）

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摘要

We report 4 highly pathogenic avian influenza A(H5N1) clade 2.3.4.4.b viruses in samples collected during June 2023 from Royal terns and Cabot's terns in Brazil. Phylodynamic analysis revealed viral movement from Peru to Brazil, indicating a concerning spread of this clade along the Atlantic Americas migratory bird flyway.

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