1. Laboratory of Immunology-Vaccinology, Faculty of Veterinary Medicine, FARAH, ULiège, Avenue de Cureghem 10, B-4000 Liège, Belgium
2. Laboratory of Parasitology, Faculty of Veterinary Medicine, FARAH, ULiège, Avenue de Cureghem 10, B-4000 Liège, Belgium
3. Sciensano, Scientific Directorate Infectious Diseases in Animals, Experimental Center Machelen, Kerklaan 68, B-1830 Machelen, Belgium