Flu season is in full force in the United States. At least 310,000 flu-related hospitalizations and 13,000 deaths have been ...

Dr. Michael Reihart, with Penn State Health, also explained who's most at risk for severe illness and how effective this year's vaccine is.

With flu cases surging in the region, Valley Health is switching to "Level Yellow," which means patients and visitors at all of its facilities will be required to wear masks.

The rate of Americans visiting doctors’ offices for flu-like illness is continuing to reach record levels, new CDC data ...