Researchers are not just worried about the virus popping up on American farms. Other types are causing trouble around the ...

This week, some of those indicators have fallen, but the CDC says that does not necessarily mean the season has reached its ...

The virus is storming the country, a reminder of how terrible its toll can be.

U.S. flu infections are showing signs of a slight decline, but health officials say it’s not clear that this severe flu ...

While vaccines may not fully protect everyone, public health experts say they’re still proven to help prevent serious illness ...

Flu cases and hospitalizations are surging, already breaking last season's records. Here's where activity is highest, what ...

Flu activity continues to remain elevated in the United States, according to newly released data from the Centers for Disease ...

A late-emerging influenza A mutation known as subclade K weakened protection, but doctors say vaccination still reduces ...

The CDC reported Friday that the rate of kids and teenagers hospitalized with flu is the second highest in 15 years for this ...