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

New Mexico, Texas and Nebraska are among the states with the highest number of people showing flu-like symptoms.

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

A map published by the CDC shows that 32 states and Washington, D.C., have “very high” levels of flu, while 11 states are classified as having “high” levels, according to the most recent data, which ...