Impact of Sars-CoV-2 prophylaxis with tixagevimab-cilgavimab in high-risk patients with B-cell malignancies: a single-center retrospective study. oleh Giovanni Manfredi Assanto , Matteo Totaro, Poggiali Rebecca, Delli Paoli Adele, Annechini Giorgia, D’Elia Gianna Maria, Aji Francesco, Petrucci Luigi, Fazio Francesca, Del Giudice Ilaria, Martelli Maurizio, Micozzi Alessandra, Giuseppe Gentile