A 12-month follow-up of the immune response to SARS-CoV-2 primary vaccination: evidence from a real-world study oleh Giorgio Fedele, Ilaria Schiavoni, Filippo Trentini, Filippo Trentini, Pasqualina Leone, Eleonora Olivetta, Alessandra Fallucca, Stefano Fiore, Angela Di Martino, Sergio Abrignani, Sergio Abrignani, Vincenzo Baldo, Tatjana Baldovin, Alessandra Bandera, Alessandra Bandera, Pierangelo Clerici, Massimo De Paschale, Fabiana Diaco, Alexander Domnich, Francesca Fortunato, Irene Giberti, Andrea Gori, Andrea Gori, Renata Grifantini, Tiziana Lazzarotto, Tiziana Lazzarotto, Vittorio Lodi, Claudio Maria Mastroianni, Rosa Prato, Vincenzo Restivo, Francesco Vitale, Silvio Brusaferro, Stefano Merler, Anna Teresa Palamara, Paola Stefanelli, the Study Group for the Immunological Monitoring post Covid19 vaccination