A novel influenza variant called subclade K appears to be driving an uptick in cases and hospitalizations throughout the U.S.

The number of flu patients in hospital in England has risen by 18%, following a 55% increase the week before. Other UK-wide ...

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

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

Experts share tips to protect children and family members from the flu -- including the subclade K variant -- ahead of the ...

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

Last year’s flu season was the roughest in nearly a decade. “We generally don’t have two bad flu seasons back to back,” said ...

Scientists have warned H5N1 bird flu could make a dangerous leap to humans, triggering a global health crisis.

Fox News senior medical analyst Dr. Marc Siegel joins 'America's Newsroom' to warn of a new strain of the flu that is spiking ...

With Christmas just a week away, doctors are warning about the so-called "tripledemic" surging across New York. According to ...

A Twin Cities metro area school shifted to e-learning after a flu outbreak impacted nearly a quarter of its students. A ...

DENVER — State health officials confirmed on Monday that a Denver metro area child is the first in the state to die from the ...