1. Department of Pathology, Parasitology and Microbiology College of Veterinary Medicine Sudan University of Science and Technology Khartoum‐North Sudan
2. Virology Department Central Veterinary Research Laboratory (CVRL) Khartoum Sudan
3. Epidemiology Department Central Veterinary Research Laboratory (CVRL) Khartoum Sudan
4. Viral Vaccine Production Department Central Veterinary Research Laboratory (CVRL) Khartoum Sudan
5. Department of Veterinary Medicine and Surgery College of Veterinary Medicine Sudan University of Science and Technology Khartoum‐North Sudan