The Centers for Disease Control and Prevention estimates there have been 4.6 million flu cases this season, along with 49,000 hospitalizations and 1,900 deaths.

It is not yet clear whether the new H3N2 Flu A subclade K subvariant will reduce the efficacy of the flu vaccine this season.

Doctors say that so far, kids are hit hardest with the flu. The flu shot is helping keep them out of the hospital.

At least 14 states and Washington, DC, are seeing high and very high levels of flu, mainly caused by a surprise new influenza ...

Historical influenza models and data from smart thermometers suggest that we may be reaching peak flu levels of the season. It's been a deadly one so far.

As of Dec. 19, the Southeastern, Southern, and Mid-Atlantic regions of the U.S. are experiencing an increase of emergency ...

Cases of the flu continue to mount with health officials recently recording the first pediatric flu-related deaths of the season, but some states are seeing much higher activity than others.

Flu season is ramping up across the country, with several states now experiencing severe or rising levels of illness, and a ...

A novel influenza variant called subclade K appears to be driving an uptick in cases and hospitalizations throughout the U.S.

Flu-like activity is up in some parts of the United States, according to the Centers for Disease Control and Prevention.The ...

(NEXSTAR) – ‘Tis the season (for respiratory illness). The latest data from the Centers for Disease Control and Prevention show a rise in people testing positive for influenza and visiting doctors ...