Vaccine-induced and naturally-acquired protection against Omicron and Delta symptomatic infection and severe COVID-19 outcomes, France, December 2021 to January 2022
Suarez Castillo, Milena and Khaoua, Hamid and Courtejoie, Noémie, Eurosurveillance, 27, 2200250 (2022), https://doi.org/10.2807/1560-7917.ES.2022.27.16.2200250