A severe case of bird flu in Louisiana has led to the discovery of mutations in the H5N1 virus, which may help it bind more ...

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.

The ongoing spread of bird flu in the United States has alarmed experts -- not just because of human cases causing severe ...

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

It’s safe to drink pasteurized milk but people run a high risk if they drink raw milk” — Linda Pinfold, agricultural ...

The virus has spread among dairy cattle, humans and other mammals. But officials say the current public health risk is low.

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

Scientists are issuing warnings after a bird flu patient showed mutations that could increase the transmission of the virus.

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

The bird flu virus found in a severely ill patient hospitalized in the United States has mutated to become better adapted to ...

Nationwide Recall of Pet Food Due to H5N1 Strain of the Highly Pathogenic Avian Influenza (Bird Flu) Contamination After Cat Dies ...

Connecticut has not been spared from the ongoing bird flu outbreak that has primarily been impacting livestock.