tetano
Editor, Senior Moderator
Emerg Infect Dis
. 2025 Jul 9;31(8).
doi: 10.3201/eid3108.250186. Online ahead of print.
Genetic Characterization of Highly Pathogenic Avian Influenza A(H5N1) Clade 2.3.4.4b, Antarctica, 2024
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
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.
Keywords: Antarctica; H5N1; HPAIV; avian influenza; genetic characterization; highly pathogenic avian influenza; influenza; respiratory infections; viruses; zoonoses.
. 2025 Jul 9;31(8).
doi: 10.3201/eid3108.250186. Online ahead of print.
Genetic Characterization of Highly Pathogenic Avian Influenza A(H5N1) Clade 2.3.4.4b, Antarctica, 2024
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
- PMID: 40633557
- DOI: 10.3201/eid3108.250186
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.
Keywords: Antarctica; H5N1; HPAIV; avian influenza; genetic characterization; highly pathogenic avian influenza; influenza; respiratory infections; viruses; zoonoses.