1. Department of Biomedical Sciences, College of Veterinary MedicineKing Faisal UniversityAl‐hofuf Egypt
2. Department of Pharmacology, Faculty of Veterinary MedicineKafrelshikh UniversityKafrelshikh Egypt
3. Department of Pathology, College of Veterinary MedicineKing Faisal UniversityAl‐hofuf Saudi Arabia
4. Department of Pathology, Faculty of Veterinary MedicineSuez Canal UniversityIsmailia Egypt
5. Al Ahsa Veterinary Diagnostic LaboratoryMinistry of AgricultureAl‐Ahsa Kingdom of Saudi Arabia
6. Veterinary Serum and Vaccine InstituteCairo Egypt