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In the past 30 days, the U.S. Department of Agriculture (USDA) National Veterinary Services Laboratories (NVSL) has confirmed the presence of HPAI (H5N1) in 43 dairy herds in six states including Iowa, Michigan, and Minnesota. Access the full list of H5N1 detections in livestock.
The Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP) state order requiring a negative test for Influenza A for lactating dairy cattle prior to moving to fairs or exhibitions is still in effect. Access the FAQ here. Additionally, USDA recently published a checklist for fair exhibitors as well as a checklist for fair and exhibition organizers to support common biosecurity goals.
To date, there have not been any detections of highly pathogenic avian influenza (HPAI) (H5N1) in Wisconsin cattle, poultry, or wildlife with the genotype associated with dairy cattle detections in other states.
As a reminder, the Food and Drug Administration (FDA) and USDA continue to emphasize that the commercial milk supply is safe because of the pasteurization process. USDA is also confident that the meat supply is safe.
Producers should continue to enhance their biosecurity efforts and monitor and control disease in their herds and flocks. DATCP is closely monitoring HPAI (H5N1) in dairy cattle and continues to encourage producers that notice unusual clinical signs in their cattle to work with their herd veterinarian. To report herds with unexplained symptoms, veterinarians should contact DATCP at (608) 224-4872 (business hours) or (800) 943-0003 (after hours and weekends).
A total of 9 human cases of H5 have been reported in the United States since 2022. As part of DATCP and the Wisconsin Department of Health Services continued attention to biosecurity, those who work with animals or materials that could be potentially infected with novel influenza A viruses are encouraged to take appropriate precautions and wear appropriate PPE as listed in the CDC guidance. Request PPE from the Wisconsin Department of Health Services medical stockpile.
Resources:
Wisconsin Department of Agriculture, Trade and Consumer Protection
Division of Animal Health
https://datcp.wi.gov
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