Article

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

2025-09-11

Abstract excerpt

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.

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Literature Corpus work: de76b92f-459b-56f3-bcb4-9c7c8ba914c0
DOI: 10.1101/2025.09.06.674605

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