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| Region and number of villages (% per region) | ||||
| IgG prevalence (%) | Lakes | Forests | Savannas | Total |
| 0–4 | 11 (44) | 118 (75) | 26 (87) | 155 (73) |
| 5–14 | 8 (32) | 39 (24) | 4 (13) | 51 (24) |
| >15 | 6 (24) | 0 | 0 | 6 (3) |
| Total | 25 (100) | 157 (100) | 30 (100) | 212 (100) |
