Doctor visits for flu symptoms are at a 15-year high. Why is this flu season so bad? Doctors discuss flu trends, symptoms and ...

Schools in at least two states canceled classes at the start of this week amid a surge in influenza cases nationwide.

Bird flu cases are still rising in the U.S. as the virus continues to devastate poultry farms. More than 145 million chickens, ducks, turkeys and other fowl have been slaughtered across the United ...

The CDC classifies 32 states and Washington, D.C., as having “very high” flu activity levels and 11 states as having “high” activity levels in its most recent data, which tracked the virus through the ...