A mutated H3N2 influenza strain known as Subclade K is rapidly spreading across the US, driving an early and intense flu ...

It may feel like you are surrounded by sniffles and coughs, but flu season activity is still low in many parts of the U.S.

A mutated flu virus is spreading across the U.S., with 86.8% of recent cases identified as H3N2 subclade K. The flu shot is ...

The peak of the flu season awaits us and may bring many severe cases and hospitalizations due to a new, menacing variant.

The latest data on respiratory illness in the United States shows that shoppers and merry-makers are spreading more than just holiday cheer: They’re also passing around germs. In many cases, it’s a ...

The strain—identified in some regions as H3N2 subclade K—has gained traction internationally, prompting warnings from health leaders in Canada, Japan,the United Kingdom, and the United States. Early ...

The CDC reports the new H3N2 subclade K is particularly affecting younger populations as the country enters peak flu season ...

New York City logged the first “very high” flu activity reading of the year, raising concerns about the season ahead.

In 2025, a newly mutated strain of the flu virus, H3N2 subclade K , has sparked global concern. The strain has obtained seven ...

H3N2, a potent influenza A subtype, is driving significant flu outbreaks globally, causing substantial hospitalizations, ...

A fast-moving variant of the H3N2 influenza A virus is spreading worldwide, raising concerns among health experts that the United States could be in for a tougher flu season than usual. Outbreaks in ...

"Last year, we had one of the most severe influenza seasons that we've had for many years. In part, it was driven by H3N2," Piedra told MedPage Today. "This year, chances are that it will be equally ...