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Vaccine efficacy (VE) for respiratory syncytial virus (RSV) vaccines in older adults (age ≥ 60 years) only in serogroup A with lower respiratory tract diseases (LRTD) with 3 signs/symptoms or more in follow-up studies (I2 0.0%, 95% CI 0.0 to 89.6; tau2 0.0, 95% CI 0.0 to 17.178; Q = 1.18, p = 0.554) [48,61,85].
