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

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

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.

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

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

Much of the country is facing record flu cases thanks to a new strain of the virus. And the "subclade K" variant is likely ...

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 ...