Table 3.
Susceptibility of An. campestris and An. dirus to deltamethrin and bifenthrin.
| Total number of samples | Mortality (%) | 95% CI for observed mortality in test | |||
|---|---|---|---|---|---|
| Test | Control | Test | Control | ||
| An. campestris b | |||||
| Deltamethrin, 0.05% | 140 | 32 | 87.2 | 0.0 | 78.4–95.9 |
| Bifenthrin, 0.09% | 88 | 30 | 95.0d | 13.3 | 79.1–100.0 |
|
| |||||
| An. dirus b | |||||
| Deltamethrin, 0.05% | 32 | 10 | 100.0 | 0.0 | NA |
| Bifenthrin, 0.09% | 10 | 10 | 100.0 | 0.0 | NA |
|
| |||||
| An. dirus c | |||||
| Deltamethrin, 0.05% | 60 | 10 | 100.0 | 0.0 | NA |
NA: not applicable. aPopulation samples obtained at 3- and 6-month post-IRS from the study MRP ecotope. Population samples obtained between pre-IRS and during IRS from the study MRP ecotope as the Anopheles sampling site IIb, and additionally, other Anopheles sampling sites of Bo Rai districtc. dAbbot's formula applied to correct observed mortality in the test.