Avian Influenza A (H5N1) Detected in Oregon Pig
Summary: An Oregon pig has tested positive for Avian Influenza A (H5N1), signaling the virus’s spread to a new mammalian host in a farm environment with shared resources. The H5N1 strain involved, clade 2.3.4.4b, is spreading globally, raising concerns over a potential pandemic. The virus poses a reassortment risk, as pigs can host both human and avian flu viruses. Currently, 44 human cases and 404 mammalian infections across 23 species have been recorded. The CDC deems public risk low but calls for vigilant monitoring of H5N1’s adaptability across species.
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