A highly contagious flu mutation called subclade K is sweeping the nation, raising health concerns about vaccine ...

Doctors and scientists say this year's influenza season could be tougher than usual. A new version of the flu virus, called ...

A new strain called H3N2 subclade K has emerged, raising concerns that the body may not be able to fight it off as well.

Flu symptoms typically lasts at least five days and up to two weeks. Some symptoms, like a cough, may persist even longer ...

As millions of Americans hit the road or take to the skies for the holidays, another seasonal traveler is picking up speed: ...

It’s already hit the U.K. and Canada. As if the holiday season wasn’t chaotic enough, the U.S. has been gifted with an early ...

Doctors say that so far, kids are hit hardest with the flu. The flu shot is helping keep them out of the hospital.

At least 14 states and Washington, DC, are seeing high and very high levels of flu, mainly caused by a surprise new influenza ...

The flu tends to come on hard and fast, which can make it feel especially tough to go through, Dr. Schaffner says. “You can ...

With peak flu season still going on until at least February, signs of the unusual “super flu” variant behind the rising sickness don’t seem to be slowing down anytime soon.

The CDC estimates that there have been at least 4.6 million illnesses, 49,000 hospitalizations, and 1,900 deaths from flu ...

This year’s flu season started early, with cases soaring about a month ahead of last year. In recent weeks, New York City and ...