Investigation of Possible Factors Influencing the Neutralizing Anti-SARS-CoV-2 Antibody Titer after Six Months from the Second Vaccination Dose in a Sample of Italian Nursing Home Personnel. - Modenese, Alberto; Paduano, Stefania; Bellucci, Rossana; Marchetti, Simona; Bruno, Fulvio; Grazioli, Pietro; Vivoli, Roberto; Gobba, Fabriziomaria; Bargellini, Annalisa (Antibodies (2073-4468), 2022)