Effectiveness of an mRNA vaccine booster dose against SARS-CoV-2 infection and severe COVID-19 in persons aged ≥60 years and other high-risk groups during predominant circulation of the delta variant in Italy, 19 July to 12 December 2021.

Massimo FabianiMaria PuopoloAntonietta FiliaChiara SaccoAlberto Mateo-UrdialesStefania Spila AlegianiMartina Del MansoFortunato D'AnconaFenicia VescioMarco BressiDaniele PetroneMatteo SpuriMaria Cristina RotaMarco MassariRoberto Da CasCristina MorcianoPaola StefanelliAntonino BellaMarco TallonValeria ProiettiAndrea SidduSerena BattilomoAnna Teresa PalamaraPatrizia PopoliSilvio BrusaferroGiovanni RezzaFlavia RiccardoFrancesca Menniti IppolitoPatrizio Pezzotti

Published in: Expert review of vaccines (2022)

These results support the ongoing vaccination campaign in Italy, where the administration of a booster dose four months after completion of primary vaccination is recommended.

Keyphrases

coronavirus disease
sars cov
randomized controlled trial
respiratory syndrome coronavirus
systematic review
early onset