The finding indicates that the virus, known as H5N1, has spilled from birds into cows at least twice — leading to these two ...

Dairy cows in Nevada have been infected with a second version of the avian influenza virus that is different from the one rampaging through herds since the spring, Agriculture Department officials ...

Second bird flu strain detected in dairy cattle for first time Detection came through national milk testing program Containment is critical, veterinary expert says Feb 5 (Reuters) - U.S. dairy ...