1 Institute of Infectious Diseases and Infection Control, University Hospital Jena, Jena, Germany; Department of Medicine I, Division of Infectious Diseases and Tropical Medicine, Medical University of Vienna, Vienna, Austria. Electronic address: christina.forstner@med.uni-jena.de.
2 Institute of Infectious Diseases and Infection Control, University Hospital Jena, Jena, Germany; CAPNETZ Stiftung, Hannover, Germany.