1. Reference Laboratory for Veterinary Quality Control on Poultry Production, Animal Health Research Institute, Agriculture Research Center (ARC), Giza 12618, Egypt
2. Avian and Rabbit Medicine Department, Faculty of Veterinary Medicine, Suez Canal University, Ismailia 51522, Egypt
3. Ceva-Phylaxia Veterinary Biologicals Co., Ltd., 1107 Budapest, Hungary
4. Christian Doppler Laboratory for Innovative Poultry Vaccines (IPOV), University of Veterinary, Medicine, Vienna, Veterinärplatz 1, 1210 Vienna, Austria
5. Clinic for Poultry and Fish Medicine, Department for Farm Animals and Veterinary Public Health, University of Veterinary Medicine Vienna, Veterinärplatz 1, 1210 Vienna, Austria