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.

Between 15% and 20% of U.S. adults over the age of 65 have obstructive sleep apnea (OSA), according to research in the ...

Doctors say it’s not too late to get the vaccine to help prevent or lessen the severity of the flu, which has led to at least 310,000 hospitalizations and 13,000 ...