After a sharp uptick in flu cases in mid-December 2025, flu activity across the U.S. and Canada remains high.

A new flu variant, subclade K, is driving an uptick in cases across the U.S. and prolonging influenza seasons in other parts of the world.

A new flu variant fueling a fast-paced rise in cases across the state has brought with it some symptoms unlike those many have come to associate with the virus.

Flu cases and hospitalizations are surging, already breaking last season's records. Here's where activity is highest, what ...

Flu is rising rapidly across the U.S., driven by a new variant of the virus. The Centers for Disease Control and Prevention ...

A ferocious surge of flu cases is linked in part to a variant that has not been dominant in the past few years — resulting in ...

A new flu strain has been detected, with the variant dubbed influenza A subclade K. How severe is the strain and does the ...

Approximately 80% of active flu cases are an unexpected strain of Influenza A virus that health officials are calling a super ...

The Centers for Disease Control and Prevention listed the COVID-19 delta variant as one of its "variants of concern" (VOCs) on June 15. According to the CDC, VOCs can be more contagious, more ...

It's been less than a month since health officials reported the first known case of a new and more contagious coronavirus variant in Texas. The man, a Harris County resident, had no travel history.