Growing concerns surrounding the transmission of H5N1 bird flu. The CDC reports that samples collected from a severely ill ...

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 ...

The agency, in its latest update released Thursday, said the mutations were not found in samples taken from wild birds, ...

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

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

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

There's a new concern that the virus could evolve to spread from human to human.

The virus in the first severe human bird flu case in the U.S. was found to have mutated. Newsweek's live blog is closed.

ALEXANDRIA, La. (KALB) - The bird flu virus in a patient in Louisiana has likely mutated while they were in the hospital.

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

Yes, pets can get bird flu from eating raw food. Pets can contract bird flu through contact with infected poultry or ...