Bird flu tests ordered for dairy cattle that cross state lines

(The Hill) – The U.S. Department of Agriculture (USDA) has ordered bird flu tests for dairy cattle that cross state lines, it announced on Wednesday. 

“USDA has identified spread between cows within the same herd, spread from cows to poultry, spread between dairies associated with cattle movements, and cows without clinical signs that have tested positive,” the agency said when announcing the federal order. 

The cattle need to test negative for the Influenza A virus, which encompasses the bird flu...