Molecular Characterization of Whole-Genome SARS-CoV-2 from the First Suspected Cases of the XE Variant in the Lazio Region, Italy oleh Martina Rueca, Emanuela Giombini, Giulia Gramigna, Cesare Ernesto Maria Gruber, Lavinia Fabeni, Angela Corpolongo, Valentina Mazzotta, Luisella Corso, Ornella Butera, Maria Beatrice Valli, Fabrizio Carletti, Stefano Pignalosa, Francesco Vairo, Emanuele Nicastri, Andrea Antinori, Enrico Girardi, Francesco Vaia, Fabrizio Maggi, SARS CoV-2 Lazio Surveillance Study Group