articleEmerging infectious diseasesMay 1, 2024DIAMOND OA

Highly Pathogenic Avian Influenza A(H5N1) Clade 2.3.4.4b Virus Infection in Domestic Dairy Cattle and Cats, United States, 2024

EBEric BurroughDRDrew R. MagstadtBJBarbara J. PetersenSJSimon J. TimmermansPCPhillip C. Gauger
PubMed
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Abstract

We report highly pathogenic avian influenza A(H5N1) virus in dairy cattle and cats in Kansas and Texas, United States, which reflects the continued spread of clade 2.3.4.4b viruses that entered the country in late 2021. Infected cattle experienced nonspecific illness, reduced feed intake and rumination, and an abrupt drop in milk production, but fatal systemic influenza infection developed in domestic cats fed raw (unpasteurized) colostrum and milk from affected cows. Cow-to-cow transmission appears to have occurred because infections were observed in cattle on Michigan, Idaho, and Ohio farms where avian influenza virus-infected cows were transported. Although the US Food and Drug Administration has indicated…

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Topics & keywords

Topics
Keywords
  • Influenza A virus subtype H5N1
  • Biology
  • Transmission (telecommunications)
  • Dairy cattle
  • Biosecurity
  • Virus
  • Virology
  • Influenza A virus
UN Sustainable Development Goals
  • Good health and well-being
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