Discover new COVID variant symptoms in 2026, understand respiratory infection risks, and learn effective protection ...

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

Flu is rising rapidly across the U.S., driven by a new variant of the virus — and cases are expected to keep growing with ...

A variant of influenza A, H3N2, is spreading across the U.S., with low vaccination rates contributing to infection rates.

Cases of influenza in the United States are rising, driven by a new strain that public health officials worry current vaccines may not protect against as effectively.

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

This flu season seems to be getting worse by the day, according to health officials. The bulk of this year's cases are being ...

Influenza is sickening thousands of people in New Jersey and shows no signs of slowing down, according to state data released ...

With a new flu strain making headlines, a local doctor is answering key questions, including how effective the flu shot is ...

The mutated strain, known as subclade K, is causing a surge in cases in the United Kingdom, Canada, and Japan. Here's what to know.

Genetic analysis performed by the county’s new public health lab shows that the variant has been in the region since late ...

Much of the concern this flu season is coming from the spread of subclade K, a subtype of influenza A. Similar subtypes have ...