1. Department of Clinical Sciences, College of Veterinary Medicine, King Faisal University, Al-Hofuf, Al-Ahsa, Saudi Arabia
2. Department of Internal Medicine, Infectious Diseases and Fish Diseases, Faculty of Veterinary Medicine, Mansoura University, Mansoura, Egypt
3. School of Biomedical Sciences, University of West London, London, United Kingdom
4. Al Ahsa Veterinary Diagnostic Laboratory, Ministry of Environment, Water and Agriculture, Al-Hofuf, Al-Ahsa, Saudi Arabia
5. Veterinary Serum and Vaccine Research Institute, Ministry of Agriculture, Cairo, Egypt
6. Department of Microbiology and parasitology, College of Veterinary Medicine, King Faisal University, Al-Hofuf, Al-Ahsa, Saudi Arabia
7. Division of Microbiology and Immunology, Department of Biomedical Sciences, College of Medicine, King Faisal University, Al-Hofuf, Al-Ahsa, Kingdom of Saudi Arabia