The US Department of Agriculture (USDA) has announced a nationwide mandate for testing the milk supply for the presence of the bird flu virus, particularly in light of recent outbreaks linked to raw milk products. This initiative comes after reports of avian flu infection in dairy workers and the detection of the H5N1 virus in raw milk samples from California. The USDA aims to monitor and contain the spread of the virus, which has prompted recalls of contaminated milk products. Testing will occur across multiple states, including Michigan and California, to ensure public safety and track the ongoing health risks associated with raw milk consumption. As health officials raise alarms over the potential dangers of unpasteurized milk, producers are facing increased scrutiny and operational challenges.