Table 1 Susceptibility status of An. stephensi (October/November, 2006) to standard doses of insecticides (7 such) following WHO methods* (1975) in Mangalore city, Karnataka, South India
Diagnostic insecticide dose on impregnated papers# | Mosquitoes exposed (n) | Dead mosquitoes after 24 h of exposure (n) | Mortality after 24 h of exposure (%) | Corrected mortality (%)§ | KDT50 (CL) | KDT95 (CL) | |||
|---|---|---|---|---|---|---|---|---|---|
| Â | Expt | Cont | Expt | Cont | Expt (95% CI) | Cont (95% CI) | Â | Â | Â |
DDT 4% | 60 | 60 | 59 | 7 | 98.3 (92.99-103.65) | 11.65 (6.33-16.89) | 98.1 (92.95-103.19) | 19.24 (18.87-21.48) | 55.67 (47.78-68.50) |
Malathion 5% | 106 | 106 | 65 | 15 | 45.36 (13.98-76.74) | 14.06 (10.93-17.19) | 54.9 (46.74-72.42) | 765.82‡ | 34147.10‡ |
Deltamethrin 0.05% | 72 | 72 | 63 | 7 | 86.62 (69.78-103.46) | 9.62 (6.24-3.00) | 86.1 (76.38-103.93) | 37.33 (35.02-39.88) | 72.73 (64.96-85.11) |
Cyfluthrin 0.15% | 77 | 57 | 74 | 8 | 95.57 (78.5-109.64) | 13.93 (9.35-18.51) | 95.5 (79.00-110.94) | 31.74 (29.50-33.96 | 69.74 (62.03-81.56) |
Alpha-cypermethrin 10% | 68 | 50 | 62 | 3 | 91.2 (86.27-96.13) | 6.03 (4.52-7.54) | 90.6 (85.34-95.90) | 30.33 (27.69-33.12) | 83.26 (70.79-104.26) |
Lambda-cyhalothrin 0.05% | 80 | 60 | 79 | 5 | 98.75 (94.78-102.72) | 8.33 (1.17-15.49) | 98.6 (94.10-103.05) | 19.20 (17.34-20.97) | 50.42 (44.99-58.17) |
Permethrin 0.75% | 77 | 57 | 77 | 3 | 100.0 (100.0-100.0) | 5.3 (4.04-6.59) | 100.0 (100.0-100.0) | 16.83 (14.87-18.67) | 47.93 (41.35-58.52) |