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

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

Super flu cases are surging, with symptoms including high fever, severe body aches, extreme fatigue, cough and lingering ...

Much of the concern this flu season is coming from the spread of subclade K, a subtype of influenza A. Similar subtypes have ...

Known as subclade K, a new, mutated flu strain that has dominated in Europe and Asia is now rapidly spreading across the US.

People with flu are most contagious during the first three days of their illness. Some people, including young children and ...

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 ...

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

Is it still flu season? Health experts explain whether a second flu shot is recommended and who may benefit as flu activity ...

The Flu cases are rising in Texas this month, and the state's flu positivity rate is higher than the national average.

Flu cases started popping up around Thanksgiving this year. This is the first big increase we’ve seen since this time last ...