Wisconsin has launched a mandatory milk testing program to detect the avian flu virus (H5N1) in dairy farms. This initiative is part of the U.S. Department of Agriculture’s national surveillance plan.
The Wisconsin Department of Agriculture, Trade and Consumer Protection (DATCP) shared that milk samples will be collected during routine quality checks, ensuring minimal disruption for farmers. The goal is to detect the virus early without wasting milk.
According to Adam Brock from DATCP, the Wisconsin Veterinary Diagnostic Laboratory is prepared to process about 1,250 samples per week. Unlike other states that test milk at processing plants, Wisconsin’s farm-level approach offers faster identification and response.
Wisconsin was one of the last states to join the USDA’s program due to the large number of dairy farms and the need for a state-specific strategy. Testing will help determine whether farms are affected and allow for better disease control.
Currently, no cases of H5N1 have been reported in Wisconsin’s dairy cows, even though over 6,000 tests have been completed since April 2024. If the state finds no virus for three months, it can reduce testing frequency.
Industry leaders, including Voice of Milk, support this safe and efficient approach. It reduces farm visits and limits virus spread, while keeping the milk supply safe for consumers.
Officials emphasize that pasteurized milk remains safe, and this testing program helps protect farms and public health alike.
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