1. Institute of Virology, Philipps University Marburg, Marburg, Germany
2. German Center for Infection Research (DZIF), Partner Site Giessen-Marburg-Langen, Germany
3. Institute for Medical Microbiology, Justus-Liebig University Giessen, Giessen, Germany
4. Department of Medicine, Infectious Diseases Unit, University Hospital Frankfurt, Frankfurt am Main, Germany