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 ...
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.