1. National Scientific Center “Institute of Experimental and Clinical Veterinary Medicine”, Kharkiv, 61023, Ukraine
2. State Poultry Research Station, v. Birky, Kharkiv Region, 63422, Ukraine
3. Friedrich-Loeffler-Institut, Suedufer 10, 17493 Greifswald-Insel Riems, Germany
4. Exotic and Emerging Avian Viral Diseases Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, Agricultural Research Service, U.S. Department of Agriculture, Athens, GA 30677