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

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

Outpatient health care visits for flu-like illnesses are at their highest levels in 15 years, according to data updated ...

The U.S. influenza rate is at or near its highest level in at least 15 years and is still on the rise, the U.S. Centers for ...

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

The Centers for Disease Control and Prevention lists Illinois in the high category for flu cases, and across the Chicago area ...

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

Two states are changing how they test for bird flu, following a new advisory from the Centers for Disease Control and ...

While we often refer to it as "the flu," the influenza virus has several strains, with flu A and flu B considered the most ...

Data from the Centers from Disease Control and Prevention on doctors' visits for flu-like symptoms indicate this is the most ...

The flu is spreading far and wide across the U.S. – and influenza A is largely to blame. Of all the flu tests reported to the ...

Bird flu is infecting more people than we think. We need to stop it now before a new pandemic begins Right after President ...