Whole genome and phylogenetic analysis of two SARS-CoV-2 strains isolated in Italy in January and February 2020: additional clues on multiple introductions and further circulation in Europe Stefanelli, Paola and Faggioni, Giovanni and Lo Presti, Alessandra and Fiore, Stefano and Marchi, Antonella and Benedetti, Eleonora and Fabiani, Concetta and Anselmo, Anna and Ciammaruconi, Andrea and Fortunato, Antonella and De Santis, Riccardo and Fillo, Silvia and Capobianchi, Maria Rosaria and Gismondo, Maria Rita and Ciervo, Alessandra and Rezza, Giovanni and Castrucci, Maria Rita and Lista, Florigio and on behalf of ISS COVID-19 study group, Eurosurveillance, 25, 2000305 (2020), https://doi.org/10.2807/1560-7917.ES.2020.25.13.2000305