1. Fundamental and Applied Research for Animals & Health (FARAH), Laboratory of Pathology, Faculty of Veterinary Medicine, University of Liège, Sart Tilman B43, B-4000 Liège, Belgium
2. Animal Resources Veterinary Management Department, Faculty of Veterinary Medicine, GIGA Research (AFT), Sart Tilman B23B, B-4000 Liège, Belgium
3. Friedrich-Loeffler-Institut, Institute for Novel and Emerging Infectious Diseases, Südufer 10, 17493 Greifswald-Insel Riems, Germany
4. Laboratory of Immunophysiology, GIGA Institute, University of Liège, B-4000 Liège, Belgium
5. Faculty of Veterinary Medicine, University of Liège, Sart Tilman B42, B-4000 Liège, Belgium