Table 4.
Knockdown times of Ae. aegypti and Ae. albopictus exposed to 0.06% deltamethrin and 4% DDT
| Locality | Ae. aegypti | Ae. albopictus | ||
|
KdT50 (95%CI); P* |
KdT95 (95%CI); P* |
KdT50 (95%CI); P* |
KdT95 (95%CI); P* |
|
| Deltamethrin | Deltamethrin | |||
| Garoua | 5.3 (4.7-5.9); P = 0.47 |
11.4 (9.7-14.2); P = 0.24 |
- | - |
| Bertoua | 5.8 (3.3-8.2); P = 0.46 |
24.6 (16.6-51.4); P = 0.025 |
7.8 (7.3-8.3); P = 0.25 |
15.9 (14.4-18.0); P = 0.38 |
| Yaoundé | 6.7 (3.7-9.7); P = 0.35 |
22.8 (15.0-58.4); P = 0.05 |
11.2 (10.6-11.8); P = 0.06 |
17.3 (16.3-19.0); P = 0.28 |
| Bafia | 5.4 (3.3-7.4), P = 0.48 |
14.6 (10.1-36.9); P = 0.49 |
- | - |
| Buea | - | - | 11.7 (10.2-13.3); P = 0.06 |
21.2 (18.1-27.4); P = 0.09 |
| Libreville | 5.9 (5.1-6.8); P = 0.45 |
13.4 (11.2-17.9); P = 0.40 |
- | - |
| Reference strain | 5.5 (4.6-6.3) |
14.5 (11.9-19.4) |
- | - |
| DDT | DDT | |||
| Garoua | 53.6 (49.9-59.2) |
101.9 (84.0-146.0) |
- | - |
| Bertoua | - | - | 84.8 (72.8-106.9) |
290.8 (200.7-523.0) |
| Yaoundé | - | - | 77.4 (68.5-113.2) |
109.2 (86.1-235.3) |
| Buea | - | - | 68.0 (63.6-78.2) |
93.9 (80.7-131.9) |
| Libreville | 58.7 (55.8-62.7) |
107.7 (94.6-129.2) |
- | - |
KdT: Knockdown times expressed in minutes; 95%CI: 95% confidence interval. *: P is the probability of homogeneity between the sample and the reference (Mantel-Haenszel chi square).