Effectiveness against severe COVID-19 of a seasonal booster dose of bivalent (original/Omicron BA.4-5) mRNA vaccines in persons aged &#8805;60 years: Estimates over calendar time and by time since administration during prevalent circulation of different Omicron subvariants, Italy, 2022-2023.

Fabiani, Massimo; Mateo-Urdiales, Alberto; Sacco, Chiara; Fotakis, Emmanouil Alexandros; Battilomo, Serena; Petrone, Daniele; Del Manso, Martina; Bella, Antonino; Riccardo, Flavia; Stefanelli, Paola; Palamara, Anna Teresa; Pezzotti, Patrizio

Effectiveness against severe COVID-19 of a seasonal booster dose of bivalent (original/Omicron BA.4-5) mRNA vaccines in persons aged ≥60 years: Estimates over calendar time and by time since administration during prevalent circulation of different Omicron subvariants, Italy, 2022-2023.

Fabiani, Massimo; Mateo-Urdiales, Alberto; Sacco, Chiara; Fotakis, Emmanouil Alexandros; Battilomo, Serena; Petrone, Daniele; Del Manso, Martina; Bella, Antonino; Riccardo, Flavia; Stefanelli, Paola; Palamara, Anna Teresa; Pezzotti, Patrizio.

Afiliação

Fabiani M; Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Viale Regina Elena 299, 00161 Rome, Italy. Electronic address: massimo.fabiani@iss.it.
Mateo-Urdiales A; Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Viale Regina Elena 299, 00161 Rome, Italy.
Sacco C; Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Viale Regina Elena 299, 00161 Rome, Italy; European Programme on Intervention Epidemiology Training (EPIET), European Centre for Disease Prevention and Control, Stockholm, Sweden.
Fotakis EA; Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Viale Regina Elena 299, 00161 Rome, Italy; European Programme on Intervention Epidemiology Training (EPIET), European Centre for Disease Prevention and Control, Stockholm, Sweden.
Battilomo S; General Directorate of Health Information System and Statistics, Italian Ministry of Health, Viale Giorgio Ribotta 5, 00144 Rome, Italy.
Petrone D; Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Viale Regina Elena 299, 00161 Rome, Italy.
Del Manso M; Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Viale Regina Elena 299, 00161 Rome, Italy.
Bella A; Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Viale Regina Elena 299, 00161 Rome, Italy.
Riccardo F; Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Viale Regina Elena 299, 00161 Rome, Italy.
Stefanelli P; Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Viale Regina Elena 299, 00161 Rome, Italy.
Palamara AT; Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Viale Regina Elena 299, 00161 Rome, Italy.
Pezzotti P; Department of Infectious Diseases, Istituto Superiore di Sanità, Rome, Viale Regina Elena 299, 00161 Rome, Italy.