Subclade K (previously known as J.2.4.1) is gaining attention because it appears to be spreading much earlier in the flu ...

The new influenza strain is highly contagious, but how deadly it is? How many deaths it has caused so far?

We are closing in on that time of year when coughs and colds are rampant and everyone appears to be getting ill. But health experts are warning this winter could see the most severe flu outbreak in ...

While vaccines may not fully protect everyone, public health experts say they’re still proven to help prevent serious illness ...

A new variant of influenza H3N2 is spreading in other countries. But that could mean the U.S. is in for a rough flu season. The mutated strain, known as subclade K, is causing a surge in cases in the ...