Neutralizing antibodies directed against SARS‐CoV‐2 in a population residing in a nursing home and a long‐term care unit. Issue 11 (1st October 2021) - Moyet, Julien; Helle, Francois; Bourdenet, Gwladys; Joseph, Cédric; Gubler, Brigitte; Brochot, Etienne; Bloch, Frédéric