AUTHOR=Criscuolo Elena , Giuliani Benedetta , Castelli Matteo , Cavallaro Mattia , Sisti Sofia , Burioni Roberto , Ferrari Davide , Mancini Nicasio , Locatelli Massimo , Clementi Nicola TITLE=Single spike mutation differentiating XBB.1 and XBB.1.5 enhances SARS-CoV-2 cell-to-cell transmission and facilitates serum-mediated enhancement JOURNAL=Frontiers in Immunology VOLUME=15 YEAR=2024 URL=https://www.frontiersin.org/journals/immunology/articles/10.3389/fimmu.2024.1501200 DOI=10.3389/fimmu.2024.1501200 ISSN=1664-3224