1. Unit for Hygiene of Poultry and Pork Products, ANSES, Laboratory of Ploufragan-Plouzané-Niort, Ploufragan, France
2. Unit for SPF Pig Production and Experimentation, ANSES, Laboratory of Ploufragan-Plouzané-Niort, Ploufragan, France
3. Unit for Epidemiology, Health and Welfare Research, ANSES, Laboratory of Ploufragan-Plouzané-Niort, Ploufragan, France
4. ANSES, Laboratory of Ploufragan-Plouzané-Niort, Ploufragan, France