1. University of Nairobi; Department of Medical Microbiology, College of Health Sciences; P.O Box 19676 Nairobi Kenya 00202
2. University of Nairobi; Institute of Tropical and Infectious Diseases (UNITID); P.O. BOX 19676 - 00202 Nairobi Kenya
3. University of Cape Town; Institute of Infectious Disease and Molecular Medicine & Division of Medical Microbiology; Anzio Road Observatory South Africa 7925