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

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.

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

Last year there were 207 pediatric deaths attributed to the flu, NBC News reported. The CDC said the number of cases is ...

The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years.

That flu activity is peaking now isn’t unexpected. You can catch the flu year-round, and peak season in the U.S. tends to be between December and February. February, though, is the clear winner. Since ...

RSV, respiratory syncytial virus, usually peaks in December and January while infecting the nose, throat and lungs, usually ...

Are people at risk for bird flu? How can I protect myself? Bird flu’s risk for the general public is still low, with no signs ...

Respiratory illnesses have left thousands of Kentuckians sick and others dead. Here are the latest numbers and what you can do to say healthy.

Flu cases are surging across the country – more than half of states are now at “very high” levels, the most severe designation by the Center for Disease Control and Prevention – but is ...

Influenza is surging in the U.S., with doctor's visits for flu symptoms at a 15-year high. Why is this flu season so bad?

There are more than 53,000 flu cases alone in the state of New York. That is four times the number of flu cases next door in ...