1. Epicentre, Paris, France
2. Ministry of Health, Ouagadougou, Burkina Faso
3. European Programme for Intervention Epidemiology Training, Oslo, NorwayNorwegian Institute of Public Health, Oslo, Norway
4. Médecins sans Frontières, Bereldange, Luxembourg
5. Norwegian Institute of Public Health, Oslo, NorwayWorld Health Organization Collaborating Centre for Reference and Research on Meningococci, Oslo, Norway