
Twelve-year-old Diarra lies unconscious in a hospital bed suffering from classic meningitis symptoms: fever, stiffness, vomiting, in Senegal's capital Dakar, December 12, 2006. REUTERS/HO/MSF/Anthony Jacopucci

| Estimated population of Meningitis Belt | 500 million (U.N. World Health Organisation (WHO)) |
| Number of cases in Meningitis Belt from 1 January 2008 to 25 May 2008 | 27,985 (WHO) |
| Attack rate in major African epidemics | 100-800 per 100,000 population (WHO) |