1. Institute of Medical Microbiology and Hospital Epidemiology, Hannover Medical School, Carl-Neuberg-Straße 1, 30625 Hannover, Germany, 2German Center for Infection Research, Hannover-Braunschweig Site, Carl-Neuberg-Straße 1, 30625 Hannover, Germany, 3New England Biolabs, 240 County Road, Ipswich, MA 01938, USA, 4Leibniz Institute DSMZ-German Collection of Microorganisms and Cell Cultures, Inhoffen