Subclade K has become the dominant form of flu and is slightly different from the virus targeted by this year’s flu vaccine.

The “super flu” is a variant of influenza A H3N2 called subclade K. Historically, similar variants have caused more severe ...

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

With peak flu season still going on until at least February, signs of the unusual “super flu” variant behind the rising ...

Along with winter weather, flu season is in full swing with a new strain of the virus hitting hospitals harder than they’ve ...

This year’s influenza virus has been dubbed the “super flu” for how quickly it’s spreading — and how hard it’s hitting.

Tis the season for getting sick. Here's what to know about the pathogens circulating in the U.S. this December and how to ...

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

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

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

Visits to emergency rooms are up; health officials say holiday travel and gatherings are helping spread the virus. The H3N2 ...

The new flu virus currently spreading in the US and Europe has not yet been detected in the Philippines. "Wala pa tayong ...