The super flu strain now spreading widely around the country has many global health experts worried that it will be particularly severe.
The newest strain, a version of the influenza A(H3N2) virus, has mutations that were not present in the strains of the 2025-2026 seasonal flu vaccine, according to the Journal of the American Medical Association.
Experts said time will tell how important the mutations are in preventing optimal efficacy of this year’s vaccine…