1. Wilhelma Zoological-Botanical Gardens; Stuttgart Germany
2. Faculty of Veterinary Medicine; Institute of Virology; University of Leipzig; Leipzig Germany
3. Friedrich-Loeffler-Institut; Federal Research Institute for Animal Health; Institute of Novel and Emerging Infectious Diseases; Greifswald-Insel Riems Germany
4. German Center for Infection Research (DZIF), partner site Hamburg-Luebeck-Borstel-Insel Riems; Braunschweig Germany
5. Department Biological Safety; German Federal Institute for Risk Assessment; Berlin Germany