1. Centre for Respiratory Diseases and Meningitis National Institute for Communicable Diseases of the National Health Laboratory Service Johannesburg South Africa
2. Department of Medical Virology, School of Pathology, Faculty of Health Sciences University of the Witwatersrand Johannesburg South Africa
3. Department of Paediatrics & Child Health, Faculty of Health Sciences University of the Witwatersrand Johannesburg South Africa
4. Influenza Division Centers for Disease Control and Prevention Atlanta Georgia USA
5. Influenza Program Centers for Disease Control and Prevention Pretoria South Africa
6. MassGenics Duluth Georgia USA
7. School of Public Health, Faculty of Health Sciences University of the Witwatersrand Johannesburg South Africa
8. School of Pathology, Faculty of Health Sciences University of the Witwatersrand Johannesburg South Africa