University of Cologne - Division of Infectious Diseases, University of Cologne - Department of Hospital Hygiene and Infection Control, University of Cologne - Department of Neurology, University of Cologne - Center for Neurosurgery, University of Cologne - Center for Neurosurgery, University of Cologne - Department of Orthopedics and Trauma Surgery, University of Cologne - Department of Orthopedics and Trauma Surgery, University of Cologne - Division of Infectious Diseases, University of Cologne - Division of Infectious Diseases, University of Cologne - Division of Infectious Diseases, Bonn University - Institute of Hygiene and Public Health, Gesundheitsamt der Stadt Köln - Abteilung Infektions- und Umwelthygiene, University Hospital of Cologne - Institute for Medical Microbiology, Immunology and Hygiene, University Hospital of Cologne - Institute for Medical Microbiology, Immunology and Hygiene, University of Cologne - Division of Infectious Diseases, University of Cologne - Department of Hospital Hygiene and Infection Control and University of Cologne - Division of Infectious Diseases

affiliation not provided to SSRN, University of Cologne - Institute of Virology, University Medical Center Hamburg-Eppendorf - Department of Tropical Medicine, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Cologne - Institute of Virology, University of Cologne - Institute of Virology, affiliation not provided to SSRN, Charité - Universitätsmedizin Berlin - Department of Infectious Diseases and Respiratory Medicine, affiliation not provided to SSRN and University of Cologne - Division of Infectious Diseases