New, Severe Flu Variant Spreading in US: Watch for These Symptoms
3 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.
How serious is the H3N2 ‘superflu’ variant? Symptoms and advice
4 days ago · The infectious form of flu spreading has been nicknamed “superflu” because it is thought to be a mutated version of the influenza A (H3N2) strain dubbed “subclade K”.
New flu strain drives aggressive and severe influenza season, experts ...
13 hours ago · Flu season intensifies as the new H3N2 variant causes severe illness worldwide. Experts urge vaccination, hand-washing and staying home when sick to prevent transmission.
What to expect with a new flu strain this winter
16 hours ago · A mutated flu strain is causing efforts to heighten immunization awareness. A flu vaccine mismatch primarily concerns the A(H3N2) subclade K variant. Subclade K accounts for a third of …
Concerns as 'mutant' H3N2 flu strain is putting people in hospital: 11 ...
5 days ago · Flu cases have soared (hospital admissions are up 50% vs this time last year) and reports say there's a new H3N2 strain. Here are the symptoms to know about.
New strain of flu hitting US: What are the symptoms? - al.com
Dec 5, 2025 · The CDC reports the new H3N2 subclade K is particularly affecting younger populations as the country enters peak flu season between December and February.
‘Superflu’ H3N2 K-Strain: Symptoms, Vaccine Protection and How the New …
6 days ago · Published: 9 December 2025 A heavily mutated flu strain — A/H3N2 subclade K, often dubbed the “K-strain” or “superflu” — is now dominating the 2025–26 flu season and driving record …
A New, More Severe Flu Variant Is Spreading in the U.S.: What Families ...
2 days ago · As the 2025–2026 flu season begins, health experts are closely watching a new, more severe flu variant spreading across the U.S. Known as subclade K of the H3N2 strain, this mutation …
The early symptom of the new H3N2 flu strain to look out for
Nov 21, 2025 · Despite the new strain, the symptoms of the flu have remained the same. Early signs you have the flu can include a blocked or runny nose, sneezing, a sore throat, a hoarse voice, a cough or ...
New H3N2 flu strain is surging. Here's what to know on symptoms
Nov 13, 2025 · What to know about new H3N2 strain The new version of H3N2 (subclade K) is a strain of influenza A. However, it is different from the H3N2 version used for the flu vaccine because the …