Genomic epidemiology reveals multiple introductions of SARS-CoV-2 followed by community and nosocomial spread, Germany, February to May 2020 Muenchhoff, Maximilian and Graf, Alexander and Krebs, Stefan and Quartucci, Caroline and Hasmann, Sandra and Hellmuth, Johannes C and Scherer, Clemens and Osterman, Andreas and Boehm, Stephan and Mandel, Christopher and Becker-Pennrich, Andrea Sabine and Zoller, Michael and Stubbe, Hans Christian and Munker, Stefan and Munker, Dieter and Milger, Katrin and Gapp, Madeleine and Schneider, Stephanie and Ruhle, Adrian and Jocham, Linda and Nicolai, Leo and Pekayvaz, Kami and Weinberger, Tobias and Mairhofer, Helga and Khatamzas, Elham and Hofmann, Katharina and Spaeth, Patricia M and Bender, Sabine and Kääb, Stefan and Zwissler, Bernhard and Mayerle, Julia and Behr, Juergen and von Bergwelt-Baildon, Michael and Reincke, Martin and Grabein, Beatrice and Hinske, Christian Ludwig and Blum, Helmut and Keppler, Oliver T, Eurosurveillance, 26, 2002066 (2021), https://doi.org/10.2807/1560-7917.ES.2021.26.43.2002066