Table 2 Comparison of prevalence (95% CI) of schistosomiasis and STH between 1980s and 2011
No of schools surveyed in 1985-87 | No of children examined in 1985-87 | Results from 1985-1987 | No of schools surveyed in 2011 | No of children examined in 2011 | Results in 2011 | Percentage difference (%) | |
|---|---|---|---|---|---|---|---|
Schistosomiasis prevalence (%) | |||||||
Overall | 75 | 4760 | 4.3 (3.8 - 4.9) | 81 | 4130 | 7.4 (6.7 - 8.3) | 72.1 |
By region | |||||||
Littoral | 38 | 1706 | 8.6 (7.3 - 10.0) | 28 | 1559 | 4.2 (3.2 - 5.3) | -51.2 |
North West | 7 | 1149 | 1.5 (0.9 - 2.4) | 18 | 898 | 4.7 (3.7 - 6.1) | 213.3 |
South | 29 | 858 | 2.2 (1.4 - 3.4) | 18 | 783 | 0.5 (0.1 - 1.7) | -77.3 |
South West | 1 | 1047 | 2.2 (1.5 - 3.3) | 17 | 890 | 18.0 (15.8 - 20.6) | 718.2 |
STH prevalence (%) | |||||||
Overall | 75 | 4760 | 88.9 (88.0 - 89.7) | 81 | 4130 | 32.5 (31.1 - 34.0) | -63.4 |
By region | |||||||
Littoral | 38 | 1706 | 92.7 (91.6 - 93.7) | 28 | 1559 | 13.0 (11.3 - 14.9) | -86.0 |
North West | 7 | 1149 | 72.3 (69.7 - 74.8) | 18 | 898 | 35.9 (33.1 - 38.7) | -50.3 |
South | 29 | 858 | 97.9 (96.8 -98.7) | 18 | 783 | 52.8 (48.0 - 57.3) | -46.1 |
South West | 1 | 1047 | 91.1 (89.3 - 92.7) | 17 | 890 | 46.2 (43.2 - 49.3) | -49.3 |