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

• Published in: Emerging infectious diseases Vol. 30; no. 3; pp. 619 - 621
• Main Authors: de Araújo, Andreina Carvalho, Silva, Laura Morais Nascimento, Cho, Andrew Yong, Repenning, Márcio, Amgarten, Deyvid, de Moraes, Ana Paula, Malta, Fernanda, Miller, Michael, Dorlass, Erick G, Palameta, Soledad, Oliveira, Daniele Bruna L, de Araújo, Jansen, Arns, Clarice Weis, Durigon, Edison L, Pinho, João Renato R, Lee, Dong-Hun, Ferreira, Helena Lage
• Format: Journal Article
• Language: English
• Published: United States U.S. National Center for Infectious Diseases 01.03.2024; Centers for Disease Control and Prevention
• Subjects: Avian flu; Avian influenza; Avian influenza viruses; Birds; Distribution; Field study; Genetic aspects; Genotype & phenotype; H5N1; Health aspects; highly pathogenic avian influenza virus; Identification and classification; influenza; Laboratories; Migratory birds; phylodynamic analysis; phylogenetic analysis; Poultry industry; Research Letter; Terns; Viruses; wild bird; South America; Brazil; Chile; North America; United States > US; Europe; Peru; Malta; influenza; H5N1; phylogenetic analysis; viruses; Brazil; highly pathogenic avian influenza virus; zoonoses; phylodynamic analysis; respiratory infections; wild bird
• ISSN: 1080-6040; 1080-6059
• DOI: 10.3201/eid3003.231157

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.