1. 1Veterinary Virology and Animal Viral Diseases, Department of Infectious and Parasitic Diseases, FARAH Research Centre, Faculty of Veterinary Medicine, Liège University, B43b, Quartier Vallée 2, Avenue de Cureghem, 10, B-4000 Liège, Belgium
2. 2Staff direction for risk assessment, Control Policy, Federal Agency for the Safety of the Food Chain, Blv du Jardin Botanique 55, 1000 Brussels, Belgium