1. Virology Unit, Institut Pasteur de Madagascar, Antananarivo 101, Madagascar
2. Epicentre, 75017 Paris, France
3. Medical Entomoly Unit, Institut Pasteur de Madagascar, Antananarivo 101, Madagascar
4. Epidemiology and Clinical Research Unit, Institut Pasteur de Madagascar, Antananarivo 101, Madagascar
5. Directorate, Institut Pasteur de Madagascar, Antananarivo 101, Madagascar
6. Primum Vitare ! D’abord Prévenir !, 75015 Paris, France