In this image provided by the U.S. Department of Agriculture, a researcher performs a rapid antigen test on milk from a dairy cow inoculated against bird flu in a containment building at the National Animal Disease Center research facility in Ames, Iowa, on Monday, July 29, 2024. (USDA Agricultural Research Service via AP, File)
The U.S. government on Friday ordered testing of the nation's milk supply for bird flu to better monitor the spread of the virus in dairy cows.
