1. Infectious Hazard Prevention and Preparedness Unit, Health Emergencies Programme, WHO Regional Office for the Eastern Mediterranean, Cairo, Egypt
2. Implementation Science Department, Implementation Science Unit, Right to Care, Centurion, Pretoria, South Africa
3. Department of Epidemiology and Biostatistics, School of Public Health, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa
4. Impact Center, Human Sciences Research Council, Pretoria, South Africa
5. Department of Community Health, School of Public Health, Amref International University, Nairobi, Kenya