Scientists believe the mutations may allow the virus to better bind to receptors in the upper airways of humans.
The CDC said Thursday its analysis of samples from a Louisiana patient with bird flu showed mutations not seen in samples ...
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 ...
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 believed to be higher.
After nearly 250 years of informal recognition, the bald eagle has officially been designated as the national bird of the ...
Following one pet fatality, Oregon health officials have traced the cat’s illness to frozen cat food that contained raw ...
Samples from a hospitalized patient in Louisiana show changes that could make the H5N1 virus spread more easily between ...