Effectiveness of seasonal influenza vaccine 2025/26 among persons 65 years and older: A cohort study in Stockholm County, Sweden.
OBJECTIVES To estimate vaccine effectiveness (VE) against any influenza, outpatient visits and hospitalisations for influenza, and 30-day all-cause mortality among community-dwelling adults aged ≥65 years during a period dominated by influenza A(H3N2) subclade K in the 2025/26 season in Stockholm County, Sweden. METH...