The H5N1 strain of avian influenza—commonly known as bird flu—has been circulating among wild migratory birds for the past two years, with substantial spillover into poultry farms. But what's sparking ...

A study published Monday provides new evidence that the H5N1 virus currently causing an outbreak of bird flu in U.S. dairy cattle may be adapted to better infecting humans than other circulating ...

In early March, Dr. Barb Petersen, a large-animal vet in Texas, began getting calls from the dairy farms she works with in the Panhandle. Workers there were seeing a lot of cows with mastitis, an ...

CHICAGO, April 3 (Reuters) - Migratory waterfowl are to blame for widening avian-flu outbreaks in Texas cows and poultry, and wild birds carrying the virus should be heading north soon, state ...

Reliance on individual dairy farmers to help track the spread of avian flu is leaving the federal government without the data necessary to understand — and slow — the virus’ spread in the U.S. The ...

The fourth human case of bird flu linked to the current dairy cow outbreak was confirmed on Wednesday in a dairy worker in Colorado, according to the Centers for Disease Control and Prevention.