Table 1.
Susceptibility of An. gambiae (s.l.) to permethrin 0.75%, with 24-h mortality, KDT50 and KDT99 at 95% confidence interval in all the study sites
| Sub-county | Site | Total tested | 24-h mortality (%) | KDT50 (95% CI) min | KDT99 (95% CI) min |
|---|---|---|---|---|---|
| Bondo | Barkanyango | 121 | 28.9 | 252.69 (141.84–1004.13) | 6725.14 (1451.65–283,549.49) |
| Omia Mwalo | 96 | 74 | 46.78 (40.14–58.07) | 156.94 (102.64–439.03) | |
| Teso | Kaliwa | 81 | 23.5 | 164.29 (94.28–7725.93) | 18,767.37 (2412.58–596,742.22) |
| Akiriamas | 100 | 53 | 54.08 (47.01–65.51) | 698.27 (391.13–1764.71) | |
| Rachuonyo | Kobuya | 100 | 63 | 33.82 (24.06–45.42) | 106.12 (66.88–595.50) |
| Kamenya | 99 | 76.8 | 47.92 (41.91–57.92) | 127.57 (89.47–312.97) | |
| Nyando | Ahero | 126 | 86.5 | 46.39 (37.83–64.14) | 152.75 (92.52–841.02) |
| Kochogo | 102 | 96.1 | 41.46 (31.80–57.53) | 115.78 (73.36–869.11) | |
| Kisumu strain | 74 | 98.6 | 29.64 (23.57–35.82) | 101.66 (70.47–232.87) | |
Abbreviations: KDT50 time required for 50% of mosquitoes exposed to the insecticide to be knocked-down, KDT99 time required for 99% of mosquitoes exposed to the insecticide to be knocked-down