1. Faculty of Medicine and Pharmacy; College of Medicine and Health Sciences; University of Rwanda; Huye Rwanda
2. Rwanda Military Hospital; Kigali Rwanda
3. Department of Infectious Diseases; Institute of Biomedicine; University of Gothenburg; Gothenburg Sweden
4. National Centre for Blood Transfusion; Rwanda Biomedical Centre; Kigali Rwanda
5. School of Public Health; College of Medicine and Health Sciences; University of Rwanda; Huye Rwanda
6. Expanded Program on Immunization; Rwanda Biomedical Centre; Kigali Rwanda
7. Division of Epidemic Surveillance and Response; Rwanda Biomedical Centre; Kigali Rwanda