1. Research Center for Emerging Infections and Zoonoses, University of Veterinary Medicine Hannover, Foundation, Bünteweg 17, 30559 Hannover, Germany
2. Division of Virology, Institute for Infectious Diseases and Zoonoses, Ludwig Maximilian University Munich, Sonnenstraße 24, 85764 Oberschleißheim, Germany
3. German Center for Infection Research (DZIF), Partner Site Munich, 80802 Munich, Germany