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Story summary
- United Kingdom health officials warn of a severe flu season driven by the H3N2 variant.
- The H3N2 variant has coincided with record infections in Australia and school closures in Japan.
- The UK is seeing rising flu activity, now three times higher than last year.
- Two of five care home residents remain unvaccinated.
- The National Health Service (NHS) anticipates winter challenges, while the flu vaccine remains effective against severe illness.
