Relative Efficacy, Effectiveness and Safety of Newer and/or Enhanced Seasonal Influenza Vaccines for the Prevention of Laboratory-Confirmed Influenza in Individuals Aged 18 years and Over: Update of a Systematic Review.

ABSTRACT: We performed an update (last search: 24 July 2023) of a systematic review on relative efficacy/effectiveness (rVE) and safety of newer/enhanced seasonal influenza vaccines in comparison with standard influenza vaccine or in head-to-head comparison. Eligible studies investigated adults aged ≥ 18 years, analysed the MF59-adjuvanted or high-dose or cell-based or recombinant or mRNA-based influenza vaccine and reported rVE or safety in randomised controlled trials (RCT) or non-randomised studies of interventions (NRSI). Of 1561 new entries identified, 17 studies were included. Together with 42 studies identified in the previous primary review they added up to 59 studies, all comparing newer/enhanced with standard seasonal influenza vaccines. Relative VE against laboratory-confirmed influenza w

SUBMITTER: Askar M 

PROVIDER: S-EPMC11850296 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature