Highly contagious H5N1 avian influenza, or “bird flu,” has been found in a Mississippi chicken flock.It’s the first major ...

Humans infected with bird flu display a wide range of symptoms, from pneumonia requiring hospitalization to no symptoms at ...

The administration is committing an additional $306 million toward battling the virus, and will distribute the money before ...

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

All year, I’ve been keeping tabs on the H5N1 avian flu outbreak in dairy cattle and birds in the United States. As a ...

The recent bird flu outbreak in the United States has not yet resulted in any positive human tests in Maine, although public ...

While these mutations don’t currently enable human-to-human transmission, experts warn of increased risks if bird flu mixes ...

The HPAI H5N1 virus has spread globally, infecting birds, mammals, and some humans. Most human cases are mild.

A virologist explains that why this probably isn’t the big one — but that it’s a sign of bad things happening with the virus.

The rise of bird flu across farms in California has raised questions about the virus and its potential threat to humans.

Hundreds of thousands of people will gather at the Pennsylvania Farm Show beginning later this week — a potential breeding ...