[1] PATH, Meningitis Vaccine Project, Ferney Voltaire, France
[2] WHO, Intercountry Support Team West Africa, Ouagadougou, Burkina Faso
[3] UN Childrens Fund, West & Cent Africa Reg Off, Dakar, Senegal
[4] Burness Commun, Bethesda, MD USA
[5] WHO, Dept Commun Capac Bldg, CH-1211 Geneva, Switzerland
[6] WHO, Dept Immunizat Vaccines & Biol, CH-1211 Geneva, Switzerland