Cases of the seasonal flu in the U.S. have reached their highest numbers in more than a decade, according to the Centers for Disease Control and Prevention.

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

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

Influenza is surging in the U.S., with doctor visits for flu symptoms at a 15-year high. Why is this flu season so bad? Doctors discuss flu trends and prevention.

South Carolina is one of a handful of states with the highest number of flu cases in the United States, according to data ...

The map of flu activity across the United States continues to darken, both figuratively and literally, as case numbers spike upward in most states, according to the Centers for Disease Control and ...

(NEXSTAR) – The map of flu activity across the United ... according to the Centers for Disease Control and Prevention (CDC). The flu positivity rate from lab tests across the country has jumped ...

During the past three years, bird flu has been reported in more than 145 million birds in 618 counties and all 50 states, ...