Table 1 Crude LF prevalence with antigen detection and microfilaraemia tests by district, sex and age group in Sierra Leone
| Â | No of persons tested by ICT cards | Percentage prevalence of antigen positives (95% CI) | No of persons examined for Mf | Percentage prevalence of Mf positives (95% CI) | Population Mf density (mf/ml) (95% CI) | Positive-only Mf density (mf/ml) (95% CI) |
|---|---|---|---|---|---|---|
Overall | 1982 | 20.8 (19.1 - 22.7) | 9288 | 2.4 (2.1 - 2.7) | 1.19 (0.90 - 1.48) | 50.3 (39.89 - 60.71) |
By district | Â | Â | Â | Â | Â | Â |
Bo | 173 | 15.0 (10.5 - 21.1) | 1005 | 2.0 (1.3 - 3.1) | 1.97 (0.84 - 3.11) | 99.17 (58.32 - 140.01) |
Bombali | 150 | 52 (44.1 - 59.8) | 830 | 6.9 (5.3 - 8.8) | 1.93 (1.28 - 2.57) | 28.07 (21.70 - 34.44) |
Bonthe | 160 | 3.1 (1.3 - 7.1) | 504 | 1.2 (0.6 - 2.6) | 0.83 (0.02 - 1.63) | 69.44 (13.68 - 125.21) |
Kailahun | 110 | 19.1 (12.8 - 27.4) | 624 | 2.6 (1.6 - 4.1) | 2.08 (0.00 - 4.89) | 81.25 (0.00 - 195.58) |
Kambia | 110 | 15.5 (9.9 - 23.4) | 619 | 2.1 (1.2 - 3.6) | 0.97 (0.23 - 1.71) | 46.15 (17.04 - 75.27) |
Kenema | 180 | 13.3 (9.1 - 19.1) | 1016 | 0.6 (0.3 - 1.3) | 0.34 (0.00 - 0.70) | 58.33 (4.42 - 112.24) |
Koinadugu | 200 | 46 (39.2 - 52.9) | 636 | 5.7 (4.1 - 7.7) | 1.99 (0.95 - 3.04) | 35.19 (19.83 - 50.54) |
Kono | 100 | 30 (21.9 - 39.6) | 875 | 2.4 (1.6 - 3.6) | 1.11 (0.37 - 1.84) | 46.03 (20.09 - 71.97) |
Moyamba | 200 | 10.5 (7.0 - 15.5) | 500 | 1 (0.4 - 2.3) | 0.67 (0.00 - 1.36) | 66.67 (6.33 - 127.00) |
Port Loko | 210 | 20.5 (15.6 - 26.4) | 500 | 4.4 (2.9 - 6.6) | 3.53 (1.48 - 5.59) | 80.30 (44.49 - 116.12) |
Pujehun | 160 | 4.4 (2.1 - 8.8) | 624 | 0 (0 - 0.6) | - | - |
Tonkolili | 100 | 37 (28.2 - 46.8) | 500 | 2.4 (1.4 - 4.2) | 0.63 (0.24 - 1.03) | 26.39 (17.99 - 34.79) |
WA Rural | 69 | 7.3 (3.1 - 15.9) | 500 | 1.2 (0.6 - 2.6) | 0.33 (0.01 - 0.65) | 27.78 (6.60 - 48.96) |
WA Urban | 60 | 11.7 (5.8 - 22.2) | 555 | 0 (0 - 0.7) | - | - |
By sex | Â | Â | Â | Â | Â | Â |
Male | 904 | 27.5 (24.7 - 30.6) | 4335 | 3.0 (2.6 - 3.6) | 1.66 (1.11 - 2.20) | 54.42 (38.81 - 70.02) |
Female | 1078 | 15.2 (13.2 - 17.5) | 4953 | 1.8 (1.4 - 2.2) | 0.78 (0.52 - 1.04)) | 44.13 (32.50 - 55.76) |
By age group (yrs) | Â | Â | Â | Â | Â | Â |
15-20 | - | - | 1873 | 1.8 (1.3 - 2.5) | 0.78 (0.38 - 1.19) | 44.44 (26.37 - 62.52) |
21-30 | - | - | 2019 | 2.6 (2.0 - 3.4) | 1.77 (0.73 - 2.80) | 68.59 (31.79 - 105.39) |
31-40 | - | - | 1830 | 2.4 (1.8 - 3.2) | 1.01 (0.55 - 1.47) | 43.02 (27.55 - 58.50) |
41-50 | - | - | 1404 | 3.4 (2.5 - 4.4) | 1.60 (0.94 - 2.27) | 47.87 (32.75 - 62.99) |
> 50 | - | - | 2162 | 2.1 (1.6 - 2.8) | 0.89 (0.49 - 1.30) | 42.96 (27.40 - 58.53) |