Table 3. Clinical signs and symptoms of Buruli ulcer by year.
| Clinical form | 1997, n (%) | 1998, n (%) | 1999, n (%) | 2000, n (%) | 2001, n (%) | Total, n (%) |
|---|---|---|---|---|---|---|
| Nodule | 35 (12.1) | 35 (10.1) | 13 (3.5) | 20 (7.2) | 19 (5.9) | 122 (7.6) |
| Edema | 1 (0.3) | 6 (1.7) | 1 (0.3) | 3 (1.1) | 1 (0.3) | 12 (0.7) |
| Plaque | 66 (22.8) | 98 (28.2) | 123 (32.9) | 72 (25.9) | 111 (34.4) | 470 (29.1) |
| Ulcer | 119 (41.0) | 99 (28.4) | 109 (29.1) | 72 (25.9) | 59 (18.3) | 458 (28.4) |
| Bone | 29 (10.0) | 23 (6.6) | 31 (8.3) | 16 (5.8) | 23 (7.1) | 122 (7.6) |
| Mixed | 36 (12.4) | 69 (19.8) | 78 (20.9) | 79 (28.4) | 80 (24.8) | 342 (21.2) |
| Healed ulcer | 4 (1.4) | 14 (4.0) | 14 (3.7) | 15 (5.4) | 29 (9.0) | 76 (4.7) |
| Other | 0 | 4 (1.1) | 4 (1.1) | 1 (0.4) | 0 | 9 (0.6) |
| Total bonea | 40 (13.8) | 49 (14.1) | 55 (14.7) | 35 (12.6) | 34 (10.5) | 213 (13.2) |
| Total | 290 | 348 | 373 | 278 | 322 | 1611 |
aCombined osteomyelitis with no associated active cutaneous form and mixed forms with bone lesions.