Table 3.
Prevalence of microfilariae (mf) by age before and after 4 rounds of mass drug administration (MDA)
| No. mf positive/No. examined (% mf positive) | |||||
| Age group (years) | 2002 (Pre-MDA) | 95% CI | 2009 (Post 4 MDAs) | 95% CI | % Decrease |
| < 11 | 30/350 (8.6) | 5.6 - 11.5 | 0/220 (0.0) | - | 100.0 |
| 11 - 20 | 76/415 (18.3) | 14.6 - 22.0 | 1/402 (0.2) | 0.0 - 1.0 | 98.9 |
| 21 - 30 | 55/228 (24.1) | 18.5 - 29.7 | 0/108 (0.0) | - | 100.0 |
| 31 - 40 | 43/150 (28.7) | 21.5 - 35.9 | 3/127 (2.4) | 0.0 - 5.1 | 91.6 |
| 41 - 50 | 40/136 (29.4) | 21.7 - 37.1 | 3/106 (2.8) | 0.0 - 5.9 | 90.5 |
| > 50 | 53/140 (37.9) | 29.9 - 45.9 | 3/116 (2.6) | 0.0 - 5.5 | 93.1 |
| All | 297/1419 (20.9) | 18.8 - 23.0 | 10/1079 (0.9) | 0.3 - 1.5 | 95.7 |