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Table 1 Crude LF prevalence with antigen detection and microfilaraemia tests by district, sex and age group in Sierra Leone

From: Lymphatic filariasis mapping by Immunochromatographic Test cards and baseline microfilaria survey prior to mass drug administration in Sierra Leone

  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       
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       
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)       
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)