Influenza cases continue to mount with the virus reaching activity levels in the U.S. not seen for the last 15 years, according to the Centers from Disease Control and Prevention.

Partial CDC data suggest that influenza deaths may have already reached as high as 2% of deaths for the week ending on Feb. 1 ...

Doctor's visits for flu symptoms are at a 15-year high. Why is this flu season so bad? Doctors discuss flu severity, symptoms and how to stay safe.

The winter flu season features two types of influenza. Here's what you need to know about them and how they differ.

Influenza levels in the US are the highest they've been in 15 years amid winter weather and a second wave of the virus.

Trader Joe's and other grocery stores are limiting egg purchases due to outbreaks of bird flu, causing egg prices to soar.

Flu infections are at or near their highest levels in at least 15 years and are still rising, the Centers for Disease Control ...