1. Department of Zoonoses Faculty of Veterinary Medicine Zagazig University Zagazig Egypt
2. Department of Veterinary Public Health Faculty of Veterinary Medicine Zagazig University Zagazig Egypt
3. Department of Food Control Faculty of Veterinary Medicine Zagazig University Zagazig Egypt
4. Department of Bacteriology Animal Health Research Institute Cairo Egypt
5. Department of Animal Wealth Development Faculty of Veterinary Medicine Zagazig University Zagazig Egypt