National HPAI In Dairy Cattle Update

In the past 30 days, the USDA National Veterinary Services Laboratories (NVSL) has confirmed the presence of HPAI (H5N1) in 263 dairy herds in two states. No detections of HPAI (H5N1) in Wisconsin cattle, poultry, or wildlife have been detected.

Biosecurity and Monitoring

  • Producers should continue to enhance biosecurity and monitor disease in their herds.
  • Report herds with unexplained symptoms to DATCP at (608) 224-4872 (business hours) or (800) 943-0003 (after hours and weekends).

Federal Order

  • Lactating dairy cattle must test negative for Influenza A virus at a National Animal Health Laboratory Network (NAHLN) lab before interstate movement.
  • A subset of 30 cows must be tested for groups moving together.

Wisconsin Requirements

  • Lactating dairy cattle must test negative for Influenza A virus before moving to fairs or exhibitions.

Human Health Precautions

  • Human cases of H5N1 have been reported following exposure to dairy cattle.
  • Wisconsin Department of Health Services (DHS) advises those working with animals to take precautions and wear PPE per CDC guidance.
  • According to the Centers for Disease Control and Prevention (CDC), the public health risk from H5N1 detections remains low.

Food Safety