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

The variant is part of the H3N2 strain, but it’s distinct enough to make it materially different. It comes as peak influenza ...

Symptoms for influenza A and its subclade K variant are similar, and both are typically more serious than influenza B. They ...

Tis the season for sniffling, coughing and calling out of work. Here's what to know about the pathogens circulating in the ...

Flu season in America is underway with a new variant called subclade K, recent Centers for Disease Control and Prevention ...

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

A new version of the common flu is spreading globally, and health officials are monitoring this evolving strain of influenza ...

Super flu driven by H3N2 variant spreads across the US alongside norovirus as holiday travel peaks, raising outbreak risks ...

Scientists who track the multitude of flu viruses around the world noticed seven fresh mutations appear in a strain of ...

Flu season is starting to ramp up as the U.S. settles into the colder weather months and indoor gatherings potentially fuel the spread of viruses.

The NHS is facing severe pressure this winter as flu cases surge earlier than usual, with some calling it "super flu." Here's ...

Local physicians report significant increase in influenza A cases across Central Texas as families gather for holidays.