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 Y. Cho, Márcio Repenning, Deyvid Amgarten, Ana Paula Moraes, Fernanda de Mello Malta, Michael E. Miller, Erick Gustavo Dorlass, Soledad Palameta, Daniele Bruna L. Oliveira, Jansen de Araújo, Clarice Weis Arns, Edison Luíz Durigon, João Renato Rebello Pinho, Dong‐Hun Lee, Helena Lage Ferreira
Abstract
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.
Topics & Concepts
CladeInfluenza A virus subtype H5N1FlywayHighly pathogenicAvian influenza virusVirologyBiologyInfluenza A virusVirusPhylogenetic treeZoologyEcologyGeneGeneticsHabitatInfluenza Virus Research StudiesViral Infections and VectorsMosquito-borne diseases and control