Doctors say the case of a teen left in critical condition shows H5N1 "can cause severe human illness." Mutations in the virus are deepening concerns about the spread of H5N1.

You’ve probably been hearing a lot about bird flu lately.It’s killed millions of chickens, driving up the price of eggs. It’s ...

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

Exclusive reporting reveals how the United States lost track of a virus that could cause the next pandemic. Problems like the ...

A global outbreak of avian flu is reaching Arizona, though officials believe the public health risk remains low. According to the Centers for Disease Control, H5 bird flu has spread in wild ...

“The risk to members of the general public who do not have exposure to infected ... Experts say it’s unlikely this specific ...

Still, the threat to humans is low ... the spread of bird flu, consider tossing your raw milk out before it does more than just spoil. Mother Jones was founded to do journalism differently.

Wisconsin's first case of H5N1 bird flu ... to people, not from one person to another ‒ which would substantially raise the level of public health alarm. The Louisiana case "does not change ...

As the bird flu virus moved into cows and people, sluggish federal action, deference to industry and neglect for worker safety put the country at risk ...

There have been 61 reported human cases of bird flu in the U.S. since April ... “The vaccine cannot prevent every single case of the flu but what it does do is prevent your need to go to ...