1. Department of Infectious Diseases and Microbiology, University of Lübeck, Lübeck, Germany
2. Division of Infectious Diseases, University of Cincinnati College of Medicine, Cincinnati, Ohio, USA
3. Division of Immunobiology, Cincinnati Children’s Hospital Medical Center, University of Cincinnati, Cincinnati, Ohio, USA
4. German Center for Infection Research (DZIF), Hamburg-Lübeck-Borstel-Riems, Germany