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.

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

If you think only the elderly die from flu, think again. These families share stories of losing their 16-year-old loved ones ...

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

Subclade K (previously known as J.2.4.1) is gaining attention because it appears to be spreading much earlier in the flu ...

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

Health experts say the U.S. flu season appears to be waning with two straight weeks of decline in measures of flu activity.

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

There is a high number of flu cases in South Carolina, even after numbers have decreased since last week. A winter storm ...

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

Respiratory viruses are usually most active from October through March, health officials say.