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

A Louisiana woman with the first severe case of bird flu in the US had a mutated form of the disease that may make it more ...

Northwest Naturals is recalling a line of its pet food after authorities Oregon linked the death of a cat to a batch ...

At least 65 human cases of H5 bird flu have been confirmed this year, with the majority being detected in California.

Los Angeles County health officials reported the first human case of bird flu in the area less than a week after a statewide ...

California officials have declared a state of emergency over the spread of bird flu, which is tearing through dairy cows in ...

The bird flu outbreak has spread to all 50 states, these maps show. Here are the symptoms and what to do if you think you ...

A bird-flu pandemic is not an exhilarating prospect. Though the strains of the virus currently in circulation may not be as ...

In much of California, bird flu has been flying under the radar, but that changed this week when Gov. Gavin Newsom declared a ...