Western Canadian Animal Health Network Information Library

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Detection of clade 2.3.4.4b H5N1 high pathogenicity avian influenza virus in a sheep in Great Britain, 2025

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Banyard et al. (preprint) reported on the identification of highly pathogenic avian influenza A(H5N1) clade 2.3.4.4b in an ewe. Viral RNA was present in milk samples from the ewe. The authors attributed the infection to proximity to infected poultry and a presumed heavily contaminated environment.
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