Highly pathogenic avian influenza H5N1 was first detected in dairy cattle in March. A recent federal order by the U.S. Department of Agriculture creates a five-stage National Milk Testing Strategy, complementing an order from April. Since March, bird flu has been detected in several Michigan herds and one farmworker.

The USDA has ordered nationwide testing of raw milk to monitor and contain the spread of bird flu in dairy cows

A new federal order has been issue requiring nation-wide milk testing in a bid to tackle the bird flu outbreak in dairy cattle