#Transcontinental Spread of HPAI #H5N1 from South #America to #Antarctica via Avian #Vectors

Abstract

Our study has for the first time identified H5N1 strains (clade 2.3.4.4b, genotype B3.2) in brown skuas from the Fildes Peninsula, South Shetland Islands, Antarctica. These findings indicate that highly pathogenic avian influenza H5N1 viruses is now actively circulating in Antarctic ecosystems, representing a significant expansion of its geographic range.

Competing Interest Statement

The authors have declared no competing interest.

Funder Information Declared

National Key Research and Development Program of China, 2024YFC2813605, 2023YFC2605504

Source: BioRxIV, https://www.biorxiv.org/content/10.1101/2025.09.06.674605v1

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#Neuroinvasive #Oropouche virus in a patient with #HIV from extra-Amazonian #Brazil

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Chimeric #hemagglutinin and #M2 #mRNA #vaccine for broad #influenza subtype protection

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