Cleveland Clinic lab tracking 'super flu': What to know

The rise of the 'Super-K' flu: What you need to know

A fast-moving influenza strain nicknamed the "Super-K" flu is catching the attention of scientists and health authorities.

Cleveland Clinic lab tracking 'super flu': What to know

The Influenza A H3N2 virus subclade K represents a change in the basic structure of the influenza virus.

A tougher, highly transmissible flu strain is spreading fast

By LOIS KINDLE A mutated form of influenza A (H3N2), known as subclade K, is the dominant flu strain circulating nationwide this season, and South Shore is no exception. Its… The post A tougher, highly transmissible flu strain is spreading fast appeared first on The Observer News.

US battles record flu season as mutated strain spreads

The U.S. is facing record-high flu cases and hospitalizations during the 2025-2026 season due to a mutated influenza strain. According to the World Health Organization, flu cases are surging nationwide to levels unseen in almost three decades. These cases are predominantly driven by the currently circulating Influenza A (H3N2) variant, subclade K, nicknamed the “super flu.” This is due to its highly transmissible nature and ability to cause more…

The ‘super flu’ is here; local officials say vaccines are the best defense.

Local officials urge vaccinations as a defense against the 'super flu'. Learn about symptoms, prevention, and local free clinics.