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Respiratory syncytial virus (RSV) neutralizing titer geometric mean fold rises through 12 months post–vaccination 1 compared with prevaccination for RSV subgroups A and B in participants aged 18–49 years (A) and 65–85 years (B) in the expanded cohort. Abbreviations: Al(OH)3, aluminum hydroxide; GMFR, geometric mean fold rise; RSV, respiratory syncytial virus; RSVpreF, bivalent respiratory syncytial virus prefusion F vaccine; SIIV, seasonal inactivated influenza vaccine.
