Table 2.
Mosquito strains and insecticides used in the WHO susceptibility test and the CDC bottle assays
| Strain | Insecticide | Diagnostic concentration | Diagnostic exposure time (min) | Estimated insecticide concentration on surface (μg/cm2) | |||
|---|---|---|---|---|---|---|---|
| WHO (%) | CDC (μg/bottle) | WHO | CDC | WHO | CDC | ||
| KISUMU1 | permethrin | 0.75 | 21.5 | 60 | 30 | 27.53 | 0.089 |
| λ-cyhalothrin | 0.05 | 12.5 | 60 | 30 | 1.84 | 0.052 | |
| bendiocarb | 0.1 | 12.5 | 60 | 30 | 3.67 | 0.052 | |
| malathion | 5 | 50 | 60 | 30 | 183.50 | 0.21 | |
| DDT | 4 | 100 | 60 | 45 | 146.8 | 0.41 | |
| VK7 | permethrin | 0.75 | 21.5 | 60 | 30 | 27.53 | 0.089 |
| λ-cyhalothrin | 0.05 | 12.5 | 60 | 30 | 1.84 | 0.052 | |
| STI | permethrin | 0.75 | 21.5 | 60 | 30 | 27.53 | 0.089 |
| λ-cyhalothrin | 0.05 | 12.5 | 60 | 30 | 1.84 | 0.052 | |
| bendiocarb | 0.1 | 12.5 | 60 | 30 | 3.67 | 0.052 | |
| malathion | 5 | 50 | 60 | 30 | 183.50 | 0.21 | |
| DDT | 4 | 100 | 60 | 45 | 146.80 | 0.41 | |
| ZAN/U | permethrin | 0.75 | 21.5 | 60 | 30 | 27.53 | 0.089 |
| DDT | 4 | 100 | 60 | 45 | 146.80 | 0.41 | |
| ROCK | permethrin | 0.25 | 15 | 60 | 30 | 9.18 | 0.062 |
| λ-cyhalothrin | 0.03 | 10 | 60 | 30 | 1.10 | 0.041 | |
| bendiocarb | - | 12.5 | - | 30 | - | 0.052 | |
| malathion | 0.8 | 50 | 60 | 30 | 29.36 | 0.21 | |
| DDT | 4 | 75 | 30 | 45 | 146.80 | 0.31 | |
| JHB | permethrin | - | 21.5 | - | 30 | - | 0.089 |
| λ-cyhalothrin | - | 12.5 | - | 30 | - | 0.052 | |
| bendiocarb | - | 12.5 | - | 30 | - | 0.052 | |
| malathion | - | 50 | - | 30 | - | 0.21 | |
| DDT | - | 100 | - | 45 | - | 0.41 | |
Insecticide in μg per cm2 was calculated in the CDC assay by dividing the amount in μg per bottle by the estimated surface area of the inner wall of the glass bottle. In the WHO assay, it was calculated based on information provided in the guidelines [25]