Post-Vaccination SARS-CoV-2 Infections among Health Workers at the University Hospital of Verona, Italy: A Retrospective Cohort Survey oleh Stefano Porru, Gianluca Spiteri, Maria Grazia Lourdes Monaco, Alessandro Valotti, Angela Carta, Virginia Lotti, Erica Diani, Giuseppe Lippi, Davide Gibellini, Giuseppe Verlato