5 days ago · What to know about the "super flu" Reality check: There isn't an official "super flu." The term emerges every so often, typically when there's a more severe than usual strain of the flu …

A more severe and highly contagious new strain of the flu is circulating this season. It's called subclade K, or more popularly "super flu." "This has the potential to be a pretty bad respiratory ...

17 hours ago · That H3N2 strain is always harsh, especially for older adults. Subclade K’s mutations aren’t enough of a change to be considered an entirely new kind of flu.

5 days ago · As this strain continues to circulate, here is a closer look at the symptoms being reported and the areas where flu activity is currently highest. New Flu Symptoms Doctors say the symptoms …

Dec 23, 2025 · With peak flu season still going on until at least February, signs of the unusual “super flu” variant behind the rising sickness don’t seem to be slowing down anytime soon.

Dec 26, 2025 · A highly contagious and aggressive flu strain is sweeping the nation this season.

6 days ago · The “super flu” is a variant of influenza A H3N2 called subclade K. Historically, similar variants have caused more severe disease and taken longer to recover from.

5 days ago · Thanks to the new ‘super flu’ subclade K variant, this flu season is already extra crappy in New York and is probably going to get worse everywhere. Here’s what to know.

Nov 25, 2025 · Worried about the new H3N2 flu strain? Learn how it affects flu vaccine protection, key symptoms to watch for and steps to lower your risk.

Dec 22, 2025 · What are the symptoms? Flu signs and symptoms develop very rapidly. Extreme tiredness is common, which differs from the symptoms of colds that occur more gradually, according …