Highly Pathogenic Avian Influenza A(H5N1) Clade 2.3.4.4b Virus in Wild Birds, Chile
Naomi Ariyama, Catalina Pardo‐Roa, Gabriela Muñoz, Carolina Aguayo, Claudia Ávila, Christian Mathieu, Leonardo I. Almonacid, Rafael Medina, Bárbara Brito, Magdalena Johow, Víctor Neira
Abstract
In December 2022, highly pathogenic avian influenza A(H5N1) clade 2.3.4.4b virus emerged in Chile. We detected H5N1 virus in 93 samples and obtained 9 whole-genome sequences of strains from wild birds. Phylogenetic analysis suggests multiple viral introductions into South America. Continued surveillance is needed to assess risks to humans and domestic poultry.
Topics & Concepts
Influenza A virus subtype H5N1CladeHighly pathogenicBiologyPhylogenetic treeVirologyVirusInfluenza A virusPhylogeneticsAvian influenza virusGenomeH5N1 genetic structurePandemicGeneGeneticsCoronavirus disease 2019 (COVID-19)Infectious disease (medical specialty)MedicineDiseasePathologyInfluenza Virus Research StudiesViral Infections and VectorsRespiratory viral infections research