Flu activity remains "very high" in most states, the Centers for Disease Control said this week, as illnesses, emergency room ...

The U.S. is experiencing its most intense flu season in 15 years, with 24 million infections, 310,000 hospitalisations, and ...

With data showing a significant rise in flu cases nationwide, medical experts are describing it as the worst flu season since ...

NEW YORK (AP) — The U.S. winter virus season is in full force, and by one measure is the most intense in 15 years.

The map of flu activity across the United States continues to darken, both figuratively and literally, as case numbers spike ...

Levels of influenza nationwide are now at the highest they have been since the peak of the 2009 swine flu pandemic, according ...