Flu A symptoms: What to watch for with the super flu The symptoms of the new flu strain are similar to the regular flu, but are more intense, more contagious and have a speedier onset.

Dec 17, 2025 · The main version of flu spreading in the United States right now is H3N2 subclade K. H3N2 is a common strain, but the specific type of it circulating now — subclade K — is what’s new.

1 day 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.

6 days ago · A new form of flu is sweeping across the U.S, with the highly contagious variant leading to more severe symptoms than other strains. Named subclade K, the virus is a version of the H3N2 …

Dec 17, 2025 · Known as subclade K, a new, mutated flu strain that has dominated in Europe and Asia is now rapidly spreading across the US.

Dec 23, 2025 · The unusual symptoms to watch for with new flu variant hitting kids ‘hard,' according to doctor Experts have been warning for months of a mutated variant that could make for a particularly ...

1 day 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 …

6 days ago · A highly contagious and aggressive flu strain is sweeping the nation this season.

2 days ago · A mutated strain of influenza A, H3N2 subclade K, is surging worldwide, sparking concern about a severe flu season in the U.S. Here's what to symptoms to look out for.

Dec 16, 2025 · Health experts say a new H3N2 flu variant is spreading early this season. Learn symptoms, vaccine guidance and what to watch for this winter.