Early administration of nirmatrelvir/ritonavir leads to faster negative SARS-CoV-2 nasal swabs than monoclonal antibodies in COVID 19 patients at high-risk for severe disease oleh Marta Colaneri, Giovanni Scaglione, Federico Fassio, Lucia Galli, Alessia Lai, Annalisa Bergna, Arianna Gabrieli, Maciej Tarkowski, Carla Della Ventura, Valeria Colombo, Laura Cordier, Davide Bernasconi, Mario Corbellino, Gianfranco Dedivitiis, Silvia Borghetti, Debora Visigalli, Salvatore Sollima, Giacomo Casalini, Giuliano Rizzardini, Andrea Gori, Spinello Antinori, Agostino Riva, Monica Schiavini