The variant is known as influenza A subtype H3N2 subclade K–sometimes called “subclade K” for short—and it has been detected ...

There are reports of this strain of the flu causing more severe illness, and early data suggest that protection against the flu from previous infections or the vaccine is “suboptimal,” according to ...

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

Dr. Tara Narula breaks down a new strain of flu, subclade K, which is causing concern as many people get ready to travel ...

A new influenza A strain subclade K is circulating due to H3N2 picking up 7 mutations this Summer. Will this lead to a worse ...

Subclade K, a variant of flu type A H3N2, has caught medical professionals off-guard. It already has spread rapidly in ...

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.

Massachusetts could be headed for a sharp uptick in flu cases in the coming weeks, public health experts warn, as a newly ...

Earlier this month, a group of Canadian researchers published early influenza data for the 2025-26 season, issuing a warning: ...

The United States may be heading into its second severe flu season in a row, driven by a mutated strain called subclade K ...

Connecticut confirmed the state’s first flu death of the season on Thursday. It was a person in their 80s from Hartford ...