1. Network of Wildlife Diseases; Department of Infectious and Parasitic Diseases; Faculty of Veterinary Medicine; University of Liège; Bâtiment B43a, Sart Tilman 4000 Liège Belgium
2. Research Laboratory for Vector Borne Diseases; Queen Astrid Military Hospital; Bruynstraat 1 1120 Brussels Belgium
3. Centre for Biological Safety; Robert Koch Institut; Nordufer 20 13353 Berlin Germany