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.

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 ...

H5N1 bird flu has been spreading across the world, recently making its way to birds in Arizona, but what does that mean for ...

The manufacturer of a popular pet food brand has issued a recall of its raw and frozen cat food, according to the Washington ...

Public health officials are sounding the alarm after bird flu mutations were discovered in a Louisianan patient. Dozens of ...