Institut National de Recherche Biomédicale - Department of Epidemiology, Institut National de Recherche Biomédicale, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, affiliation not provided to SSRN, University of Antwerp - Department of Clinical Sciences, Institute of Tropical Medicine, Bureau GIZ à Kinshasa, University of Montpellier, National Multisectoral Committee for Ebola Response, Université de Kinshasa - Département de Microbiologie and Institute of tropical medicine and infectious diseases