Japan Sees Unusually Early and Rapid Influenza Outbreak, Prompting Rush for Vaccinations

Japan is experiencing an unusually early and rapidly spreading influenza season, with the average number of patients per clinic jumping to 11.35 for the week through October 4, a sevenfold increase compared to the same period in 2025. The flu is particularly prevalent among children, leading to a sixfold increase in school closures and a rush among residents to get flu shots.