Agriculture Department testing beef for bird flu virus

The Department of Agriculture (USDA) is testing beef for a bird flu virus following the infections of cattle in multiple states, though it says it remains confident the country's meat supply is safe.

The agency is doing three studies related to bird flu in dairy cattle, one in which they sample ground beef at retail locations, another in which they sample the muscle beef from culled cows and a third in which they utilize a virus surrogate in ground beef and cook it at varying temperatures.