Neutralizing antibodies against SARS-CoV-2 variants following mRNA booster vaccination in adults older than 65 years oleh Christine Durier, Laetitia Ninove, Maeva Lefebvre, Anne Radenne, Corinne Desaint, Jacques Ropers, Rebecca Bauer, Said Lebbah, Diane Carette, Marie Lachatre, Anne-Sophie Lecompte, Dominique Deplanque, Elisabeth Botelho-Nevers, Anne Conrad, Bertrand Dussol, Zoha Maakaroun-Vermesse, Giovanna Melica, Jean-François Nicolas, Renaud Verdon, Jacques Kiladjian, Paul Loubet, Catherine Schmidt-Mutter, Christian Dualé, Séverine Ansart, Stéphane Priet, Axel Levier, Diana Molino, Louis-Victorien Vieillard, Béatrice Parfait, Jean-Daniel Lelièvre, Eric Tartour, Xavier de Lamballerie, Odile Launay, ANRS0002S CoviCompareP Group, AP-HP CoviCompareM Group, Biological resource centers, Laboratories, Trial coordination, Sponsor, Scientific Committee