Table 2 Mortality observed 24 h after exposure of Aedes aegypti to permethrin, deltamethrin and alpha-cypermethrin
Insecticides | Districts | Nb of Aedes aegypti tested | Mean knockdown after 60 min (95% CI) | Mean mortality after 24 h (95% CI) | Resistance status |
|---|---|---|---|---|---|
Alpha-cypermethrin (0.5%) | Avrankou | 100 | 91.00 [83.16–95.54] | 91.00 [83.16–95.54] | SR |
Adjarra | 80 | 93.75 [85.38–97.67] | 93.75 [85.38–97.67] | SR | |
Porto-Novo | 77 | 93.51 [84.89–97.58] | 93.51 [84.89–97.58] | SR | |
Kétou | 92 | 95.65 [88.61–98.59] | 95.65 [88.61–98.59] | SR | |
Ifangni | 98 | 100.00 [95.29–100] | 100.00 [95.29–100] | SS | |
Deltamethrin (0.05%) | Avrankou | 100 | 95.00 [88.17–98.14] | 95.00 [88.17–98.14] | SR |
Adjarra | 85 | 95.29 [87.73–98.48] | 95.29 [87.73–98.48] | SR | |
Porto-Novo | 74 | 63.51 [51.45–74.16] | 63.51 [51.45–74.16] | R | |
Kétou | 98 | 93.87 [86.62–97.48] | 93.87 [86.62–97.48] | SR | |
Ifangni | 99 | 90.91 [83.00–95.49] | 90.91 [83.00–95.49] | SR | |
Permethrin (0.75%) | Avrankou | 99 | 89.89 [81.79–94.78] | 89.89 [81.79–94.78] | R |
Adjarra | 90 | 84.44 [74.93–90.93] | 84.44 [94.89–100] | R | |
Porto-Novo | 84 | 77.38 [66.70–85.50] | 77.38 [66.70–85.50] | R | |
Kétou | 95 | 84.21 [74.97–90.60] | 84.21 [74.97–90.60] | R | |
Ifangni | 100 | 97 [90.84–99.22] | 97 [90.84–99.22] | SR |