As flu season ramps up in the U.S., influenza is not as simple as it first appears, with several different strains in play. "We're starting to see flu activity pick up for the season," Carrie Reed ...

Schools across the United States are closing temporarily due to surges of flu and other seasonal illnesses among students and ...

Does it feel like you know a lot of people fighting the flu virus this winter? The Centers for Disease Control and Prevention ...

Flu season, or when there's an uptick in cases, is usually during the fall and winter months in the United States, starting in October and lasting as long as May. Flu season peak months typically ...

The C.D.C. estimates that there have been at least 12 million flu infections so far this season, leading to 160,000 hospitalizations and 6,600 deaths. Doctors frequently prescribe Tamiflu ...