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.

Levels of influenza nationwide are now at the highest they have been since the peak of the 2009 swine flu pandemic ... testing laboratories. Data collected by the CDC from labs found 31.6% ...

Flu activity has hit a new peak for the season and is continuing to increase across the country, according to data from the Centers for Disease Control and Prevention’s weekly influenza reports. The ...