Table 1 Susceptibility level of four Culex quinquefasciatus populations to 4% DDT, 0.75% permethrin, 0.05% deltamethrin, 0.1% bendiocarb and 5% malathion.
Mosquito population | Location | Insecticides | N tested | % mortality [95% CI] | Resistance status |
|---|---|---|---|---|---|
Etam-Bafia | City centre | 4% DDT | 91 | 0 | R |
0.75% permethrin | 92 | 0 | R | ||
0.05% deltamethrin | 86 | 1.16 [− 1.10–3.42] | R | ||
0.1% bendiocarb | 92 | 0 | R | ||
5% malathion | 100 | 88 [81.63–94.37] | R | ||
Mendong | Periphery | 4% DDT | 100 | 0 | R |
0.75% permethrin | 78 | 0 | R | ||
0.05% deltamethrin | 80 | 0 | R | ||
0.1% bendiocarb | 82 | 14.63 [6.98–22.28] | R | ||
5% malathion | 82 | 98.78 [96.41–101.15] | S | ||
Nkolbisson | Periphery | 4% DDT | 88 | 0 | R |
0.75% permethrin | 80 | 0 | R | ||
0.05% deltamethrin | 82 | 0 | R | ||
0.1% bendiocarb | 83 | 1.2 [− 1.14–3.54] | R | ||
5% malathion | 80 | 57.5 [− 46.67–68.33] | R | ||
Tongolo | City centre | 4% DDT | 100 | 3 [− 0.34–6.34] | R |
0.75% permethrin | 100 | 0 | R | ||
0.05% deltamethrin | 100 | 0 | R | ||
0.1% bendiocarb | 101 | 2.97 [− 0.37–6.31] | R | ||
5% malathion | 100 | 89 [82.87–95.13] | R | ||
Cx. Slab | Laboratory strain | 4% DDT | 300 | 13 | / |
0.75% permethrin | 300 | 82 | / | ||
0.05% deltamethrin | 300 | 90 | / | ||
0.1% bendiocarb | 100 | 99 | / | ||
5% malathion | 100 | 100 | / | ||
Kisumu strain (An. gambiae) | Laboratory strain | 4% DDT | 100 | 98 | / |
0.75% permethrin | 100 | 100 | / | ||
0.05% deltamethrin | 100 | 100 | / | ||
0.1% bendiocarb | 100 | 100 | / | ||
5% malathion | 100 | 100 | / |
