Estimating averted COVID-19 cases, hospitalisations, intensive care unit admissions and deaths by COVID-19 vaccination, Italy, January−September 2021 Sacco, Chiara and Mateo-Urdiales, Alberto and Petrone, Daniele and Spuri, Matteo and Fabiani, Massimo and Vescio, Maria Fenicia and Bressi, Marco and Riccardo, Flavia and Del Manso, Martina and Bella, Antonino and Pezzotti, Patrizio and on behalf of the Italian Integrated Surveillance of COVID-19 study group, Eurosurveillance, 26, 2101001 (2021), https://doi.org/10.2807/1560-7917.ES.2021.26.47.2101001