The distribution of observed meningitis epidemics during 1841-1999 is shown above. (These data are based on the accounts of epidemics documented in the published literature and internal instiutional reports, which had been attributed by the authors to meningococci.) The WHO proposes the use of epidemic thresholds for the early detection of epidemics and improved control responses. Defining an 'at-risk' area therefore has important implications for increased serveillance activities and epidemic preparedness.
| Not Reported |
| Reported to District |
| Reported to Province |
Reference: Molesworth, A. M., L. E. Cuevas, S. J. Connor, A. P. Morse and M. C. Thomson, 2003: Environmental Risk and Meningitis Epidemics in Africa. Emerging Infectious Diseases, 9(10): 1287-1293. |
