Subclade K has become the dominant form of flu and is slightly different from the virus targeted by this year’s flu vaccine.

A highly contagious flu mutation called subclade K is sweeping the nation, raising health concerns about vaccine ...

As the end of the year approaches, health authorities are keeping a close watch on a new dominant flu strain circulating ...

There are some unusual symptoms being reported with a new and mutated flu variant quickly spreading in the U.S. ahead of ...

The UK is facing a surge of hospitalizations fueled by the novel variant subclade K. And the U.S. is likely next.

The variant has mutations that may allow it to evade some vaccine protections, though the current flu vaccine still offers some defense.

Current data from the CDC suggests the H3N2 strain and subvariant K — the dominant subvariant in the U.S. — are more ...

Flu season intensifies as the new H3N2 variant causes severe illness worldwide. Experts urge vaccination, hand-washing and ...

A new version of the common flu is spreading globally, and health officials are monitoring this evolving strain of influenza ...

DOTHAN, Ala. (WTVY) - Flu cases are spiking across Alabama following the death of an 11-year-old boy from the illness last ...

The variant emerged after the 2025-2026 flu vaccine was developed, meaning the current vaccine does not target this specific ...

An exponential rise in flu cases driven by a newly dominant strain has intensified pressure on hospitals across England, ...