Table 1.
Surveillance of suspected meningitis in six sanitary districts in Burkina Faso, 2004-2008.
| District level | Health center level | ||||||||
|---|---|---|---|---|---|---|---|---|---|
| Year | District | Population size in 1000 (number of HC) | Official epidemic declaration | Annual incidence per 100 (case count) | Peak WIR | HC population size in 1000 | Number of HC with localised epidemics* | Annual incidence per 100 in HC with localised epidemics † | Annual incidence per 100 in HC without localised epidemics † |
| 2004 | |||||||||
| Dandé | 213.3 (21) | No | 0.04 (83) | 4 | 9.4 (1.8-22.3) | 0 | na | na | |
| Houndé | 205.3 (25) | No | 0.03 (64) | 5 | 8.4 (3.0-26.3) | 0 | na | na | |
| Secteur 15 | 351.5 (31) | No | 0.04 (153) | 4 | 6.7 (1.5-50.3) | 0 | na | na | |
| 2005 | na | na | |||||||
| Dandé | 219.7 (21) | No | 0.03 (72) | 5 | 9.7 (1.8-23.0) | 0 | na | na | |
| Houndé | 212.8 (25) | No | 0.02 (35) | 2 | 8.7 (3.1-27.2) | 0 | na | na | |
| Orodara | 244.5 (35) | No | 0.04 (106) | 4 | 6.3 (1.1-19.3) | 2 | 0.94 (0.84-1.04) | 0.01 (0-0.18) | |
| Secteur 15 | 367.7 (32) | No | 0.02 (89) | 3 | 6.9 (1.5-53.4) | 0 | na | na | |
| Secteur 22 | 405.9 (21) | No | 0.004 (17) | 1 | 12.8 (2.2-76.0) | 0 | na | na | |
| 2006 | na | na | |||||||
| Boulsa | 269.1 (30) | Yes | 0.10 (255) | 12 | 9.9 (3.5-18.3) | 0 | na | na | |
| Dandé | 225.6 (22) | Yes | 0.12 (275) | 23 | 9.5 (1.9-21.5) | 2 | 0.68 (0.49-0.87) | 0.08 (0-0.33) | |
| Houndé | 220.2 (25) | Yes | 0.25 (555) | 53 | 9.0 (3.2-28.2) | 8 | 0.60 (0.31-1.11) | 0.14 (0.01-0.38) | |
| Orodara | 269.9 (40) | No | 0.05 (132) | 9 | 5.9 (1.1-19.9) | 0 | na | na | |
| Secteur 15 | 384.8 (34) | Yes | 0.57 (2182) | 83 | 6.1 (1.57-6.6) | 10 | 1.44 (0.32-7.42) | 0.13 (0.02-0.49) | |
| Secteur 22 | 431.2 (23) | No | 0.04 (163) | 8 | 12.7 (2.3-80.5) | 0 | na | na | |
| 2007 | |||||||||
| Boulsa | 272.9 (30) | Yes | 0.14 (387) | 20 | 10.0 (3.6-18.6) | 2 | 0.91 (0.53-1.30) | 0.08 (0.0-1.30) | |
| Dandé | 232.2 (24) | Yes | 0.08 (196) | 16 | 9.2 (2.0-22.1) | 1 | 0.33 | 0.03 (0-0.29) | |
| Houndé | 227.8 (28) | Yes | 0.09 (196) | 9 | 7.9 (3.3-18.0) | 1 | 0.59 | 0.03 (0-0.49) | |
| Orodara | 278.2 (40) | Yes | 0.17 (467) | 37 | 6.1 (1.1-20.5) | 3 | 0.45 (0.32-2.05) | 0.02 (0-0.45) | |
| Secteur 15 | 388.5 (34) | No | 0.05 (181) | 6 | 6.3 (1.6-60.0) | 0 | na | na | |
| Secteur 22 | 454.2 (25) | No | 0.03 (140) | 4 | 12.9 (2.0-72.7) | 0 | na | na | |
| 2008 | |||||||||
| Boulsa | 272.7 (30) | Yes | 0.14 (372) | 29 | 10.1 (3.6-18.9) | 2 | 1.12 (0.82-1.41) | 0.07 (0.0-1.41) | |
| Dandé | 239.1 (24) | No | 0.04 (97) | 5 | 9.5 (2.1-22.8) | 0 | na | na | |
| Houndé | 235.6 (28) | Yes | 0.11 (267) | 22 | 8.2 (3.5-18.7) | 0 | na | na | |
| Orodara | 286.9 (43) | Yes | 0.08 (241) | 12 | 5.64 (1.2-18.7) | 1 | 2.93 | 0.02 (0-0.32) | |
| Secteur 15 | 412.3 (35) | Yes | 0.04 (154) | 21 | 6.60 (1.7-63.6) | 0 | na | na | |
| Secteur 22 | 478.6 (25) | No | 0.03 (121) | 6 | 13.5 (2.0-77.1) | 0 | na | na | |
Population and incidence in 26 surveyed districts years at the district level and at the health centre level. If not indicated otherwise, the health centre level columns show median (range).
Peak WIR, highest weekly incidence rate (per 100,000) observed during a given year
HC, health centers
na, not applicable
* A localised epidemic (LE) was defined at the health centre level as 75 suspected meningitis cases reported per 100,000 inhabitants during at least two consecutive weeks, with a minimum of five cases within at least one week.
† In all district years, the annual incidences between health centres with and without localised epidemic differed significantly (P < 0.001, Poisson model).