A mutated strain of influenza A, H3N2 subclade K, is surging worldwide, sparking concerns about a severe flu season in the ...

This year’s flu season could be more serious due to a new Influenza H3N2 mutation known as “subclade K." Here's what to know ...

The man was taken to hospital with a high fever, confusion and respiratory distress earlier this month and was later ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. "The flu," or seasonal influenza, is caused by influenza viruses, like those pictured above.

A flu strain that emerged over the summer is causing "unprecedented" outbreaks in Japan, as well as in Canada and the U.K.

A new flu variant spreading overseas may set the stage for another tough winter in the United States, experts warn.

A new strain of the flu called subclade K could make for a particularly nasty flu season across the country, according to public health experts.  The strain already caused Japan to declare an ...

The U.S. is on high alert as a fast-moving H3N2 flu variant is spreading aggressively, signaling a potentially tough flu season ahead.

The experimental mRNA vaccine prevented 60% to 67% of flu infections, while the conventional vaccine prevented 44% to 54% of ...

According to BBC reporting, experts in the U.K. predict the country will have a severe flu season, too, based on an early ...