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Minnesota board hears updated H5N1 findings as detections expand to dairy cattle; public risk described as low

Minnesota Board of Animal Health · April 3, 2024
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Summary

State and federal veterinarians told the Minnesota Board of Animal Health that the H5N1 outbreak first seen in poultry has been detected in dairy cattle in multiple states and linked to at least one human conjunctival infection; officials said risk to the general public is low while urging targeted biosecurity and reporting to veterinarians.

The Minnesota Board of Animal Health devoted the largest portion of its meeting to new developments in highly pathogenic avian influenza (H5N1), including detections in dairy cattle in several states and one confirmed human infection. Dr. Katie Corneal, a board veterinarian, summarized national findings and urged producers to work with their herd veterinarian if they see sudden drops in feed intake or milk production.

Why it matters: The agency said the pattern in mid- to late-lactation dairy herds is an evolving concern that requires coordination among producers, veterinarians, state labs and federal partners. While the outbreak remains primarily an animal-health issue, the involvement of dairy cattle expands the range of species under surveillance and prompted health agencies to update monitoring guidance.

Federal and state labs have confirmed H5N1 genetic material in raw milk from affected herds in Texas, Kansas,…

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