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

Tiny genetic alterations could help the bird flu virus enter cells in the upper respiratory tract, the C.D.C. said. But there ...

Samples from a hospitalized patient in Louisiana show changes that could make the H5N1 virus spread more easily between ...

The CDC has confirmed a total of 66 human cases of bird flu across the United States as of Friday, although the number is ...

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

A genetic analysis of samples from the patient in Louisiana recently hospitalized with the country’s first severe case of ...

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

A genetic analysis suggests the bird flu virus mutated inside a Louisiana patient who contracted the first severe case of the ...

Los Angeles County reported its first case of human H5N1 bird flu infection Monday, as health officials sought to spread ...

A genetic analysis of the H5N1 bird flu in a Louisiana patient reveals potential mutations for human transmissibility, says ...