Table 2.
Laboratory-confirmed meningitis cases from case-based meningitis surveillance, MenAfriNet, 2015–2017
| Burkina Faso | Chada | Malia | Niger | Togo | Total | |
|---|---|---|---|---|---|---|
| N (%) | ||||||
| Laboratory-confirmed meningitis casesb | 2,224 (27) | 64 (39) | 118 (24) | 1,701 (24) | 264 (33) | 4,371 (26) |
| N. meningitidis | 671 (30) | 22 (34) | 32 (27) | 1,494 (88) | 214 (81) | 2,433 (56) |
| Serogroup | ||||||
| A | 5 (1) | 0 | 0 | 0 | 0 | 5 (0.2) |
| C | 40 (6) | 0 | 19 (59) | 1,236 (83) | 0 | 1,295 (53) |
| W | 478 (71) | 2 (9) | 2 (6) | 109 (7) | 128 (60) | 719 (30) |
| X | 91 (14) | 20 (91) | 8 (25) | 127 (9) | 69 (32) | 315 (13) |
| Y | 4 (1) | 0 | 2 (6) | 0 | 0 | 6 (0.2) |
| NmIndc | 53 (8) | 0 | 1 (3) | 22 (1) | 17 (8) | 93 (4) |
| Reported deathsd | 47 (7) | NR | 1 (3) | 59 (6) | 6 (3) | 113 (6) |
| S. pneumoniae | 1,442 (65) | 33 (52) | 58 (49) | 177 (10) | 48 (18) | 1,758 (40) |
| Reported deathsd | 245 (17) | NR | 6 (10) | 14 (16) | 7 (22) | 272 (17) |
| H. influenzae | 111 (5) | 9 (14) | 28 (24) | 30 (2) | 2 (1) | 180 (4) |
| Serotype | ||||||
| Serotype b | 82 (74) | 5 (56) | 18 (64) | 13 (43) | 2 (100) | 120 (67) |
| Non-b serotypes | 29 (26) | 4 (44) | 10 (36) | 17 (57) | 0 | 60 (33) |
| Reported deathsd | 12 (11) | NR | 1 (4) | 1 (7) | 0 | 14 (9) |
Abbreviations: NmInd, Neisseria meningitidis with indeterminate serogroup; NR, not reported.
Note: Case counts stratified by country, pathogen, age group, and year are presented in Supplemental Table 2.
As Mali began data collection in 2015 and 2016 was the first complete year of surveillance, only 2016–2017 data are included. Similarly, only 2017 data from Chad are included.
Confirmed via latex agglutination, culture, or real-time polymerase chain reaction as N. meningitidis, S. pneumoniae, or H. influenzae. Percentage calculated using the number of suspected cases with a CSF specimen (n=16,885, 92%) as the denominator.
Of the 93 NmInd cases, 34 (37%) were determined to be NmInd via real-time polymerase chain reaction, 5 (5%) were determined to be NmInd via culture, and 54 (58%) were determined to be NmInd as they only had latex agglutination results available, which were NmW/Y, precluding identification of a specific serogroup.
Percentage calculated using the number of cases with a reported outcome as the denominator.