Table 1.
Percentage mortality in field samples of Aedes aegypti 24 hours after exposure to insecticide-impregnated papers and correspondence with knockdown time (KdT) using WHO test tubes
| Insecticides (diagnostic dose) |
Cape Verde strain |
Dakar strain |
||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| N | Mortality (%) | KDT50(min) | KDT95(min) | Resistance status | N | Mortality (%) | KDT50(min) | KDT95(min) | Resistance status | |
| DDT (4%) |
231 |
33.3 |
78.8 |
288.7 |
R |
214 |
24.4 |
- |
- |
R |
| Propoxur (0.1%) |
233 |
87.2 |
23.5 |
38.8 |
RPC |
228 |
87.2 |
23.9 |
73.9 |
RPC |
| Fenitrothion (1%) |
123 |
100 |
- |
- |
S |
125 |
99.1 |
- |
- |
S |
| Deltamethrin (0.05%) |
228 |
100 |
9.6 |
27 |
S |
189 |
94.5 |
15.7 |
30.3 |
RPC |
| Lambda-Cyhalothrin (0.05%) |
125 |
100 |
14.5 |
26.9 |
S |
125 |
81.6 |
18.6 |
34.2 |
RPC |
| Permethrin (0.75%) | 123 | 100 | 7.2 | 21.8 | S | 125 | 100 | 11.3 | 20.5 | S |
N=number of specimens tested; S=susceptible: R=resistant; RPC=resistance possible to be confirmed.