The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years.
Levels of influenza nationwide are now at the highest they have been since the peak of the 2009 swine flu pandemic ... double the 18.2% at last season's peak. The CDC says that most states ...
He called it the worst flu season he could remember. So far this season, the CDC estimates, there have been at least 24 million flu illnesses, 310,000 hospitalizations and 13,000 deaths ...