A backyard flock in Vermont was sickened with H5N1, agricultural officials said on Thursday, following other reports of bird ...

A new mutation and the first severe case of H5N1 bird flu discovered in a human in Louisiana has raised concern among some ...

A sample of the virus found in a critically ill patient in the US has shown signs of mutating to better suit human airways, although there is no indication it has spread beyond that individual.

Pet food company Northwest Naturals is recalling a batch of its raw turkey pet food after a cat died from bird flu linked to ...

A genetic analysis suggests the bird flu virus mutated inside a Louisiana patient who contracted the nation’s first severe ...