Highly Pathogenic Avian Influenza (H5N1) in Dairy Cattle

​​​​​​​​​​​​​​​​​​​​​​​​​​​Reporting an Animal Disease​

To report a suspected disease, contact DATCP's Division of Animal Health by:
  • Emaildatcpanimalimports@wisconsin.gov
  • Phone
    • Weekdays: (608) 224-4872, Monday-Friday, 7:45 a.m. to 4:30 p.m.
    • Evenings, Weekends, and Holidays: 800-943-0003. Select option 2. State that you are reporting a potential animal disease.​

The U.S. Department of Agriculture (USDA), Food and Drug Administration (FDA), and Centers for Disease Control and Prevention (CDC) are working with state animal health officials ​on highly pathogenic avian influenza (HPAI) H5N1 virus in dairy cattle that is causing decreased milk production, reduced appetite, and other symptoms. USDA's National Veterinary Services Laboratories has now confirmed the presence of H5N1 Influenza A virus (known to cause highly pathogenic avian influenza (HPAI)) in dairy herds in some states. Access the USDA list of detections in domestic livestock.

The CDC reported that a person in Texas tested positive for HPAI ​A (H5N1) virus. The CDC shared in its announcement that this infection does not change the human health risk assessment for the general public, which the CDC considers to be low. However, people with close or prolonged, unprotected exposures to infected birds, livestock, or other animals, or to environments contaminated by infected birds or other animals, are at greater risk of infection. Access the interim recom​mendations from CDC for prevention, monitoring, and public health investigations.

DATCP encourages producers to practice good biosecurity. including minimizing animal movements and isolating new additions to the herd. Current import rules can be found on the DATCP Cattle and Bison Movement webpage. It is important to check requirements prior to importing animals from any state, as requirements can change. Requirements such as official identification and certificates of veterinary inspection (CVIs) help ensure cattle entering Wisconsin are healthy prior to import.

2024 HPAI Communications