| Health Area | Frequency | Percentage | ||
| Case | Control | Total | ||
| Circulaire | 1 | 2 | 3 | 0.91 |
| Emmaüs | 4 | 8 | 12 | 3.64 |
| Kabanga | 68 | 136 | 204 | 61.82 |
| Kabwela | 4 | 8 | 12 | 3.64 |
| Kamasaka | 5 | 10 | 15 | 4.55 |
| Lapofa | 5 | 10 | 15 | 4.55 |
| Njanja | 2 | 4 | 6 | 1.82 |
| Polyvalent | 3 | 6 | 9 | 2.73 |
| Référence | 5 | 10 | 15 | 4.55 |
| Safina | 3 | 6 | 9 | 2.73 |
| Saint Habraham | 4 | 8 | 12 | 3.64 |
| Savio | 3 | 6 | 9 | 2.73 |
| Souzanela | 3 | 6 | 9 | 2.73 |
| Total | 110 | 220 | 330 | 100.00 |