Table 1 Pre-control prevalence and Ivermectin Treatment History in 27 communities in the onchocerciasis foci of Birnin Gwari and of Kauru/Lere in Kaduna State, Nigeria
Local Government Area (LGA) | Year of first Treatment | No. of evaluated communities | Pre-control prevalence of microfilaridermia (%) | No. of Treatments | Mean treatment coverage and range (%) | |
|---|---|---|---|---|---|---|
| Â | Â | Â | Range | Median | Â | Â |
Birnin Gwari | 1991 | 1 | 47.5 | 47.5 | 17 | 78.3 |
| Â | 1993 | 4 | 38.9-75.0 | 58.8 | 15 | 78.4 (76.7-79.3) |
Kauru | 1991 | 8 | 46.8-67.3 | 56.4 | 17 | 76.2 (74.4-80.3) |
| Â | 1993 | 3 | 23.1-38.4 | 25.9 | 15 | 78.0 (76.5-80.4) |
Lere | 1991 | 5 | 51.3-84.6 | 52.7 | 17 | 77.4 (75.4-79.6) |
| Â | 1993 | 6 | 30.9-55.2 | 37.4 | 15 | 78.1 (76.9-79.4) |
Total | 1991-1993 | 27 | 23.1-84.6 | 52.7 | 15-17 | 77.7 (74.4-80.4) |