Table 2

Knockdown times and mortality rates for Anopheles gambiae field populations in Ndogpassi, Douala, after exposure to 4% DDT, 0.75% permethrin or 0.05% deltamethrin
Insecticide N Knockdown times Kdt50 (95% CI) Min Kdt95 (95% CI) Min KdT50R Mortality
4% DDT 249 226.5 (0.27 – 1849) 520.5 (0.01 – 25442) 12.04 33%
0.75% permethrin 350 110.7 (86.6 – 175) 389.8 (227.6 – 1094) 12 76%
0.05% deltamethrin 158 44.3 (42 – 47.02) 108.6 (94.9 – 129.7) 4.7 98%

N: number of mosquitoes tested, Kd: knockdown times, Bold: resistant populations.

Kdt50R: kdT50 of tested population divided by KdT50 of Kisumu strain.

KdT50: Kd time in minutes for 50% mosquitoes.

KdT95: Kd time in minute for 95% mosquitoes.

Mortality: mortality rate 24 hours post exposure to the insecticide.

Antonio-Nkondjio et al.

Antonio-Nkondjio et al. BMC Infectious Diseases 2012 12:275   doi:10.1186/1471-2334-12-275

Open Data