Table 1 Mortality observed 24 h after exposure of Aedes albopictus to permethrin, deltamethrin and alpha-cypermethrin
Insecticides | Districts | Nb of Aedes albopictus tested | Mean knockdown after 60 min (%) (95% CI) | Mean mortality (%) after 24 h (95% CI) | Resistance status |
|---|---|---|---|---|---|
Alpha-cypermethrin (0.05%) | Avrankou | 100 | 100 [95.38–100] | 83 [73.89–89.50] | R |
Adjarra | 75 | 100 [93.92–100] | 94.67 [86.19–98.27] | SR | |
Porto-Novo | 93 | 95.7 [88.73–98.61] | 95.7 [88.73–98.61] | SR | |
Kétou | 89 | 100 [94.84–100] | 100 [94.84–100] | S | |
Ifangni | 89 | 94.38 [86.78–97.91] | 94.38 [86.78–97.91] | SR | |
Deltamethrin (0.05%) | Avrankou | 92 | 100 [95.00–100] | 100 [95.00–100] | S |
Adjarra | 100 | 100 [95.38–100] | 100 [95.38–100] | S | |
Porto-Novo | 93 | 100 [95.05–100] | 100 [95.05–100] | S | |
Kétou | 90 | 100 [94.89–100] | 100 [94.89–100] | S | |
Ifangni | 90 | 100 [94.89–100] | 100 [94.89–100] | S | |
Permethrin (0.75%) | Avrankou | 93 | 100 [95.05–100] | 100 [95.05–100] | S |
Adjarra | 85 | 100 [94.61–100] | 100 [94.61–100] | S | |
Porto-Novo | 94 | 98.93 [93.37–99.94] | 100 [95.10–100] | S | |
Kétou | 95 | 100 [95.15–100] | 100 [95.15–100] | S | |
Ifangni | 95 | 100 [95.15–100] | 100 [95.15–100] | S |