Flu-related pediatric deaths have doubled since last week, according to the CDC. Here's what to know this week, including ...

The CDC estimates there have been at least 19 million cases so far this season.

Feeling under the weather? You could have Influenza Type A. Here's the difference between Influenza Type A and Type B.

Flu cases are ticking down, but experts warn the U.S. isn’t out of the woods yet.

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

All viral activity benchmarks have gone down, except for a slight increase in the death rate. Here's what to know about the ...

Flu activity continues to remain elevated across the U.S. with at least 18 million cases, according to newly released data ...

The Influenza A H3N2 virus subclade K represents a change in the basic structure of the influenza virus.

Flu activity is surging and expected to continue. Meanwhile, the Florida Health Department hasn't released a weekly report in ...

The spread of influenza-like illness has reached "very high" levels in Michigan, according to the U.S. Centers for Disease Control and Prevention.

Medical experts debunk flu shot myths: vaccines use inactive virus that cannot cause illness. Discover what side effects actually mean for your immunity.

One type mutates often and causes seasonal pandemics. The other one doesn't. Here's what else is different.