1. Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
2. Southeastern Cooperative Wildlife Disease Study, Department of Population Health, College of Veterinary Medicine, University of Georgia, Athens, GA, USA
3. Emergency Centre for Transboundary Animal Diseases (ECTAD)—Vietnam, Food and Agriculture Organization of the United Nations, Hanoi, Vietnam
4. Exotic and Emerging Avian Viral Diseases Research Unit, Southeast Poultry Research Laboratory, Agricultural Research Service, United States Department of Agriculture, Athens, GA, USA