1. Department of Virology, Faculty of Veterinary Medicine Ondokuz Mayis University Samsun Turkey
2. Bornova Veterinary Control Institute Ministry of Agriculture and Forestry Izmir Turkey
3. Department of Experimental Animals, Faculty of Veterinary Medicine Ondokuz Mayis University Samsun Turkey
4. Samsun Veterinary Control Institute Ministry of Agriculture and Forestry Samsun Turkey
5. Department of Preventive Medicine and Clinical Studies, Faculty of Veterinary Sciences University of Gadarif Al Qadarif Sudan