1. Department of Medicine; Makerere University College of Health Sciences; Kampala Uganda
2. Infectious Diseases Institute; Makerere University College of Health Sciences; Kampala Uganda
3. Department of Medical Microbiology; Makerere University College of Health Sciences; Kampala Uganda
4. Medical Research Council Uganda/Uganda Virus Research Institute; Entebbe Uganda
5. Vaccine and Gene Therapy Institute of Florida; Port Saint Lucie FL USA