Genetic Characterization of Highly Pathogenic Avian Influenza A(H5N1) Clade 2.3.4.4b, Antarctica, 2024

Genetic Characterization of Highly Pathogenic Avian Influenza A(H5N1) Clade 2.3.4.4b, Antarctica, 2024

In 2024, we sequenced highly pathogenic avian influenza virus A(H5N1) clade 2.3.4.4b genomes isolated from 5 brown skuas from James Ross Island, Antarctica. Phylogenetic analysis suggested the virus reached Antarctica through South America. Continued genetic surveillance will be critical to elucida...

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Main Authors: Victor Neira, Naomi Ariyama, Pablo N. Castillo-Torres, Barbara Brito, Gabriela Muñoz, Karla B. Díaz Morales, Leonardo I. Almonacid, Benjamín Bennett-Laso, Barbara Berazay, Miloš Barták, Rafael Medina, Marcelo González-Aravena, Catalina Pardo-Roa
Format: Article
Language:English
Published: Centers for Disease Control and Prevention 2025-08-01
Series:Emerging Infectious Diseases
Subjects:
avian influenza
highly pathogenic avian influenza
H5N1
HPAIV
genetic characterization
influenza
Online Access:https://wwwnc.cdc.gov/eid/article/31/8/25-0186_article
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Summary:In 2024, we sequenced highly pathogenic avian influenza virus A(H5N1) clade 2.3.4.4b genomes isolated from 5 brown skuas from James Ross Island, Antarctica. Phylogenetic analysis suggested the virus reached Antarctica through South America. Continued genetic surveillance will be critical to elucidate H5N1 virus transmission dynamics within Antarctica and surrounding areas.
ISSN:1080-6040
1080-6059

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