Table 3.
Knock-down times (KdT50 and KdT95) of reference strains 1 h after exposed to insecticides
| Insecticides | Strains | N | % KD | KdT 50 | CI 95 | KdT 95 | CI 95 | KdT 50 R |
|---|---|---|---|---|---|---|---|---|
| Permethrin | Kisumu | 98 | 100 | 8.6 | 7.6-9.6 | 28.5 | 24.7-34 | - |
| Acerkis | 100 | 100 | 10.9 | 9.5-12.4 | 25.2 | 21-32 | 1,3 | |
| KisKDR | 99 | 23,23 | 178 | 114-414.5 | 2544 | 864-21000 | 20,6 | |
| AcerKdrkis | 100 | 7 | No KdT | - | No KdT- | - | - | |
| Deltamethrin | Kisumu | 101 | 100 | 7.7 | 6.8-8.5 | 21 | 18.3-25 | - |
| Acerkis | 96 | 100 | 8 | 7.2-8.7 | 17.8 | 15.4-21 | 1 | |
| KisKDR | 101 | 94 | 19.3 | 15-23.5 | 51 | 39.6-77.4 | 2,5 | |
| AcerKdrkis | 100 | 94 | 27 | 24-30 | 55.7 | 48-69.4 | 3,5 | |
| DDT | Kisumu | 99 | 98 | 33.6 | 31-36 | 50.1 | 45.6-57.7 | - |
| Acerkis | 100 | 77 | 45 | 43-47 | 77.5 | 70.7-88 | 1.3 | |
| KisKDR | 98 | 0 | No KdT | - | No KdT | - | - | |
| AcerKdrkis | 100 | 0 | No KdT | - | No KdT | - | - |
N = number of mosquitoes tested.
KdT50R, KdT50 of the tested population divided by KdT50 of the Kisumu (susceptible reference strain).
% KD = percentage of mosquitoes knock-down after 60 mn.
KdT50/95 = Knock-down times in minutes for 50 or 95% of adult mosquitoes after one hour of exposure to impregnated paper in WHO test Kits.
CI 95 = 95% confidence intervals.
No KdT = Complete loss of KD effect (less than 5% of KD mosquitoes after one hour exposure).