1. Zoonosis Science Center Department of Medical Biochemistry and Microbiology Uppsala University Uppsala Sweden
2. Reference Laboratory for Veterinary Quality Control on Poultry Production Animal Health Research Institute Agriculture Research Center Giza Egypt
3. Friedrich‐Loeffler‐Institut Federal Research Institute for Animal Health Institute of Diagnostic Virology Greifswald Insel‐Riems Germany
4. Department of poultry Diseases Faculty of Veterinary Medicine Beni‐Suef University Beni‐Suef Egypt
5. Department of Poultry Diseases Faculty of Veterinary Medicine Cairo University Giza Egypt