About the Authors
Department of Infectious Disease Epidemiology, School of Public Health, Faculty of Medicine, Imperial College London, London, United Kingdom
Department of Epidemiology and Biostatistics, School of Public Health, Faculty of Medicine, Imperial College London, London, United Kingdom
Travel and Migrant Health Section, Health Protection Agency Centre for Infections, London, United Kingdom
Health Information Systems, World Health Organization Regional Office for Africa, Brazzaville, Congo
Special Programme for Research and Training in Tropical Diseases, World Health Organization, Geneva, Switzerland
The authors have declared that no competing interests exist.
Analyzed the data: MW MPL KSW. Wrote the paper: MW MPL M-GB. Managed data collection by the OCP at its headquarters in Burkina Faso: EWSA. Made the data available for analysis as the last OCP director: BAB. Liaised with the OCP for provision of the data and discussed with MW, MPL, and KSW the analysis and interpretation of results: M-GB. Read and approved the final, submitted version: MW MPL KSW EWSA BAB M-GB.