Studies have found fragments of bird flu virus in about 20% of the milk supply. It's not expected to pose a threat to humans, but may indicate the outbreak is more widespread than previously thought.

(Reuters) -The U.S. Food and Drug Administration said on Tuesday that it had found bird flu virus particles in some samples of pasteurized milk, but said commercial milk supply remains safe. The FDA ...

Dairy cows in the U.S. are coming down with bird flu. Federal officials started investigating last month, and they found infected cows in more than 30 herds across eight states. And this week the FDA ...