1 Department of Otorhinolaryngology, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany.
2 Department of Ophthalmology, University of Cologne, Faculty of Medicine and University Hospital of Cologne, Cologne, Germany.
3 University of Cologne, Department I of Internal Medicine, Division of Infectious Diseases, Cologne, Germany.
4 German Center for Infection Research (DZIF), Partner Site Bonn-Cologne, Cologne, Germany.
5 University of Cologne, Center for Molecular Medicine Cologne, Cologne, Germany.
6 Laboratory of Experimental Immunology, Institute of Virology, University of Cologne, Faculty of Medicine and University Hospital Cologne, Cologne, Germany.