The USDA is testing ground beef for bird flu. Experts are confident the meat supply is safe

The U.S. Department of Agriculture will test ground beef for bird flu particles, though officials said Tuesday they’re confident the nation’s meat supply is safe.

Bird flu has been found in nearly three-dozen dairy herds across nine states. The new testing is the latest effort by the USDA to track and understand how the virus is spreading among livestock.

Two studies will test if particles of the bird flu virus, called Type A H5N1, is found in beef for sale in the states where dairy...