1. US Department of Agriculture, Agricultural Research Service, Arthropod-Borne Animal Diseases Research Unit, Manhattan, Kansas.
2. Department of Virology, Central Veterinary Institute of Wageningen University (CVI), The Netherlands; Department of Biochemistry, Centre for Human Metabonomics, North-West University, South Africa.
3. Department of Pathology, College of Veterinary Medicine, University of Georgia, Athens, Georgia.
4. Institute of Diagnostic Virology, Friedrich-Loeffler-Institut, Insel Riems, Germany.
5. Vector-Borne Diseases Programme, The Pirbright Institute, Pirbright, Woking, United Kingdom.