A particularly infectious subvariant of influenza is keeping emergency room numbers high and causing especially severe ...

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

Northeast Wisconsin, like the rest of the state and most of the country, is experiencing 'very high flu activity.' ...

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

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

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

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

Flu activity in Wisconsin was moderate and increasing the week ending Dec. 20, the latest data from the state health ...

Subclade K, which is circulating in Arizona, has been dubbed a 'super flu' but some experts say that's not an accurate ...

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.