A third vaccine dose equalises the levels of effectiveness and immunogenicity of heterologous or homologous COVID-19 vaccine regimens, Lyon, France, December 2021 to March 2022 Guibert, Nicolas and Trepat, Kylian and Pozzetto, Bruno and Josset, Laurence and Fassier, Jean-Baptiste and Allatif, Omran and Saker, Kahina and Brengel-Pesce, Karen and Walzer, Thierry and Vanhems, Philippe and Trouillet-Assant, Sophie and on behalf of the Lyon-COVID study group, Eurosurveillance, 28, 2200746 (2023), https://doi.org/10.2807/1560-7917.ES.2023.28.15.2200746