The CDC said Thursday its analysis of samples from a Louisiana patient with bird flu showed mutations not seen in samples ...

Scientists believe the mutations may allow the virus to better bind to receptors in the upper airways of humans.

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

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

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

The agency, in its latest update released Thursday, said the mutations were not found in samples taken from wild birds, suggesting the virus changed over the course of the patient’s infection.

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.