1. Virus Research Centre, Kenya Medical Research Institute, Nairobi, Kenya
2. Paediatric Observation Wards, Kenyatta Hospital, Nairobi, Kenya
3. Department of Paediatrics, University of Nairobi, Nairobi, Kenya
4. Department of Medical Microbiology, University of Nairobi, Nairobi, Kenya
5. Ministry of Health, Nairobi, Kenya