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 ...

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

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

Much of the country is facing record flu cases thanks to a new strain of the virus. And the "subclade K" variant is likely already here in Spokane. The new strain formed last year as influenza A's ...

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.

Flu is rising rapidly across the U.S., driven by a new variant of the virus — and cases are expected to keep growing with holiday travel. That variant, known as “subclade K,” led to early outbreaks in ...