Until last week, all bird flu in dairy herds had been identified as the B3.13 variant, which was believed to have come from ...

Dairy cows in Nevada have been infected with a new strain of bird flu virus different from the one circulating in other herds ...

Dairy cattle in Nevada have been infected with a new type of bird flu that's different from the version that has spread in ...

A version of the avian influenza virus different from the one rampaging through herds since last spring has been detected in ...

A second strain of bird flu has been detected in U.S. dairy cattle, marking the first confirmed infections of this particular ...