1. National Institute for Communicable Diseases of the National Health Laboratory Service Johannesburg South Africa
2. Department of Pathology Division of Medical Virology University of Cape Town South Africa
3. Department of Agriculture Western Cape Provincial Veterinary Laboratory Stellenbosch South Africa
4. Veterinary Services Western Cape Department of Agriculture South Africa
5. School of Public Health Faculty of Health Sciences University of the Witwatersrand Johannesburg South Africa
6. School of Pathology Faculty of Health Sciences University of the Witwatersrand Johannesburg South Africa