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Table 2 S. mansoni prevalence at sentinel sites in 2009 and 2012 in Sierra Leone
From: Schistosoma mansoni infection after three years of mass drug administration in Sierra Leone
| 2009 | 2012 | Change (%) | |||
|---|---|---|---|---|---|
| Number examined | Prevalence (%) (95% CI) | Number examined | Prevalence (%) (95% CI) | ||
| Overall | 770 | 49.7 (46.2 - 53.3) | 1290 | 16.3 (14.4 - 18.4) | −67.2 |
| By district | |||||
| Bo | 119 | 25.2 (18.3 - 33.7) | 198 | 0.5 (0.1 - 2.8) | −98.0 |
| Bombali | 142 | 27.5 (20.8 - 35.3) | 239 | 17.6 (13.3 - 22.9) | −36.0 |
| Kailahun | 90 | 60.0 (49.7 - 69.5) | 149 | 16.8 (11.6 - 23.6) | −72.0 |
| Kenema | 119 | 60.5 (51.5 - 68.8) | 199 | 17.1 (12.5 - 22.9) | −71.7 |
| Koinadugu | 60 | 83.3 (72.0 - 90.7) | 100 | 36.0 (27.3 -45.8) | −56.8 |
| Kono | 60 | 65.0 (52.4 - 75.8) | 101 | 20.8 (14.0 - 29.7) | −68.0 |
| Tonkolili | 180 | 35.0 (28.4 - 42.2) | 304 | 12.2 (9.0 - 16.3) | −65.1 |
| By baseline endemicity | |||||
| Low | 118 | 4.1 (1.3 - 10.7) | 201 | 8.7 (4.7 - 14.3)* | 112.2 |
| Moderate | 294 | 24.7 (19.8 - 30.0) | 498 | 7.4 (5.3 - 10.1) | −70.0 |
| High | 358 | 74.5 (70.1 - 78.4) | 591 | 23.6 (20.6 - 26.9) | −68.3 |
| By sex | |||||
| Boys | 373 | 52.8 (47.7 - 57.8) | 645 | 17.0 (14.2 - 20.0) | −67.8 |
| Girls | 396 | 46.7 (41.7 - 51.5) | 644 | 15.7 (13.1 - 18.7) | −66.4 |
