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New incursions of #H5N1 clade 2.3.4.4b highly pathogenic avian #influenza viruses in wild #birds, South #Korea, October 2024

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By G.M.

{Excerpt}

Highly pathogenic avian influenza (HPAI) subtype H5Nx viruses of the A/Goose/Guangdong/1/1996 (Gs/Gd) lineage have led to substantial economic losses within the poultry industry and represent an ongoing public health threat (1). The Gs/Gd lineage H5 viruses not only have evolved into 10 primary clades 0–9 with their subclades but are also reassorted with other influenza A viruses (2–4). Notably, since 2020, clade 2.3.4.4b HPAI H5N1 viruses have caused outbreaks across a broad geographic range, including Asia, Europe, Africa, North America, South America, and Antarctica (5–7). The infections of HPAI H5N1 viruses in mammals including wild, domestic, and humans underscore the potential zoonotic risk and pandemic potential of these evolving H5 viruses (8).

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Source: Frontiers in Veterinary Sciences, https://www.frontiersin.org/journals/veterinary-science/articles/10.3389/fvets.2024.1526118/full

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