1. Department of Emergency Medicine, Inselspital, Bern University Hospital, University of Bern, 3010 Bern, Switzerland
2. Department of Immunology, Institute of Virology and Immunology, 3147 Mittelhäusern, Switzerland
3. Department of Infectious Diseases and Pathobiology, Vetsuisse Faculty, University of Bern, 3001 Bern, Switzerland
4. Multidisciplinary Center for Infectious Diseases (MCID), University of Bern, Hallerstrasse 6, 3012 Bern, Switzerland