The United States Department of Agriculture (USDA) has made an official order to start testing all samples of raw milk as bird flu continues to impact farm

The U.S. Department of Agriculture will begin testing the nation’s milk supply for the bird flu virus known as H5N1, nearly a year after the virus began circulating through dairy cattle, the department announced on Friday.

Secretary of Agriculture Tom Vilsack said the move will "put us on a path to quickly controlling and stopping the virus’ spread nationwide.”

West Virginia Department of Agriculture Dairy Program Manager Rachel Shockey said the testing includes samples from West Virginia milk suppliers.

California health officials are investigating a possible case of bird flu in a child who became ill after drinking raw milk, Marin County Public<a class="excerpt-read-more" href=" More

The US Department of Agriculture is set to begin testing raw milk from dairy silos around the nation in an effort to better track the H5N1 bird flu that has been spreading in dairy cattle since March.

Research has shown the highest traces of bird flu virus detected on the cow are around its mammary glands and in the milk itself.

The move comes amid an outbreak of bird flu that has sickened dozens across seven states and marked the first time the virus was identified in dairy cows. Here’s what to know.

Agriculture Department orders testing of the nation's milk supply for bird flu.

The U.S. government has ordered testing of the nation's milk supply for bird flu to better understand and control the spread of the virus in dairy cows.