1. Department of Avian and Rabbit Medicine, Faculty of Veterinary Medicine; Zagazig University; Zagazig City Egypt
2. Department of Zoonoses, Faculty of Veterinary Medicine; Zagazig University; Zagazig City Egypt
3. Division of Infectious Diseases, Department of Animal Medicine, Faculty of Veterinary Medicine; Zagazig University; Zagazig City Egypt
4. Department of Health Management; Atlantic Veterinary College, University of Prince Edward Island; Charlottetown Prince Edward Island Canada