USDA implements bird flu testing for milk in Michigan

By Andi Anderson

The United States Department of Agriculture (USDA) has introduced new testing measures for bird flu (H5N1) in unpasteurized milk samples in Michigan and five other states—California, Colorado, Mississippi, Pennsylvania, and Oregon. This initiative is part of a broader effort to contain the outbreak and safeguard dairy herds.

The federal order mandates that raw milk samples from dairy farms, processors, and transporters be shared with the USDA upon request. It also requires herd owners to provide data for disease surveillance and contact tracing. Positive test results must be reported by state veterinarians and private laboratories.

The USDA’s five-stage plan includes testing milk silos and tanks, using rapid response measures to contain outbreaks, and continuing tests until the virus is eradicated. U.S. Agriculture Secretary Tom Vilsack stated that this plan would provide farmers with greater confidence in protecting their herds while reducing the virus’s spread.

Michigan, a leading state in milk production, produced over 12 billion pounds of milk in 2023. However, the avian flu has impacted dairy herds, with infections reported on 30 farms this year. To address this, Michigan agricultural officials have introduced monthly testing designed to minimize disruptions for dairy farmers.

Phill Durst, a dairy and cattle expert from Michigan State University Extension, highlighted the importance of the testing initiative. He emphasized that pasteurization eliminates the virus in dairy products, ensuring their safety for consumption.

“Knowing the extent of infected herds allows better preparation and risk reduction,” Durst noted. He reassured that the overall dairy supply remains stable despite the testing requirements.

This proactive step by the USDA and Michigan’s agricultural authorities aims to enhance disease control, maintain dairy safety, and support farmers during challenging times.

Photo Credit: usda