The Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP) is requiring Influenza A testing prior to movement of lactating dairy cattle to fairs or exhibitions became effective on June 19, 2024. This goal of this state order is to prevent the spread of highly pathogenic avian influenza (HPAI) (H5N1) in dairy cattle. While this effort seeks to limit the spread of the disease, further prevention efforts are advised as there is risk of disease transmission anytime animals are commingled.

DATCP continues to update the frequently asked questions document on the state order. Access the FAQ here.

The U.S. Department of Agriculture (USDA) National Veterinary Services Laboratories (NVSL) has now confirmed the presence of HPAI (H5N1) in more than 120 dairy herds in 12 states including Iowa, Michigan, and Minnesota. Access the full list of H5N1 detections in livestock.

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. 

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).

Wisconsin Department of Agriculture, Trade and Consumer Protection
Division of Animal Health
https://datcp.wi.gov