In the last 30 days, the U.S. Department of Agriculture (USDA) has confirmed highly pathogenic avian influenza (HPAI), or H5N1, in:
- 96 cases in poultry in 19 states.
- Zero cases in livestock in any state.
To date, there have been no H5N1 detections in livestock other than poultry in Wisconsin.
Wisconsin and the National Milk Testing Strategy
With help from industry partners, Wisconsin is sampling milk at the farm level for the mandatory USDA Animal and Plant Health Inspection Service (APHIS) National Milk Testing Strategy (NMTS). When Wisconsin began NMTS testing in May 2025, the goal was to test each farm approximately every month. Wisconsin achieved unaffected Gold Status under the NMTS in September 2025.
As of October 1, 2025, Wisconsin transitioned to 50% reduced testing frequency while maintaining the state’s commitment to ongoing surveillance pursuant to the NMTS. DATCP continues to utilize milk samples that are already collected through existing, routine sampling to streamline the NMTS testing process.
