Novel Highly Pathogenic Avian Influenza (A)H5N1 Triple Reassortant in Argentina, 2025
Ralph E T Vanstreels1, Martha I Nelson2, María C Artuso3
1Karen C. Drayer Wildlife Health Center, One Health Institute, School of Veterinary Medicine, University of California, Davis, USA.
Biorxiv : the Preprint Server for Biology
|June 26, 2025
Abstract:
Genomic sequencing of re-emerging highly pathogenic avian influenza A(H5N1) virus detected in Argentina in February 2025 revealed novel triple-reassortant viruses containing gene segments from Eurasian H5N1 and low pathogenic viruses from South and North American lineages. These findings underscore continued evolution and diversification of clade 2.3.4.4b H5N1 in the Americas.
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