1. Exotic and Emerging Avian Viral Disease Research Unit, Southeast Poultry Research Laboratory, U.S. National Poultry Research Center, ARS, USDA, Athens, GA, USA
2. National Scientific Center Institute of Experimental and Clinical Veterinary Medicine, Kharkiv, Ukraine
3. Department of Zoology, H.S. Skovoroda Kharkiv National Pedagogical University, Kharkiv, Ukraine
4. Danube Biosphere Reserve NAS of Ukraine, Vilkove, Ukraine
5. State Scientific Research Institute for Laboratory Diagnostics and Veterinary and Sanitary Expertise, Kyiv, Ukraine