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Table 1 Knockdown times (KDTs) and mortality rates of Anopheles gambiae M form after exposure to diagnostic concentrations of pyrethroids on filter papers

From: Status of pyrethroid resistance in Anopheles gambiae s. s. M form prior to the scaling up of Long Lasting Insecticidal Nets (LLINs) in Adzopé, Eastern Côte d’Ivoire

Insecticide Mosquito population N Knockdown effect Mortality (%) Status
    Knockdown time KDT50 Ratio   
    KDT50 (min) CL 95% KDT95 (min) CL 95% RR50 CL 95%   
Permethrin 1% Kisumu 96 9.7 9.1–10.2 13.7 12.7–15.4 -   100 S
Port-Bouët 95 63.4 54.5–81.0 192.8 131.7–391.9 6.5 5.6–7.6 68.4b R
Tsassodji 100 76.2 64.7–96.6 329.8 219.6–618.7 7.9 6.4–9.6 42.0a R
Deltamethrin 0.05% Kisumu 96 21.2 18.1–24.5 38.0 31.5–53.4 -   100 S
Port-Bouët 92 33.8 28.8–39.3 73.8 58.8–111.7 1.6 1.5–1.7 96.7b SR
Tsassodji 102 50.4 46.7–55.2 133.7 110.5–174.0 2.4 2.2–2.6 58.8a R
Lambda-cyhalothrin 0.05% Kisumu 95 27.5 24.5–30.3 43.4 38.4–52.9 -   100 S
Port-Bouët 89 44.7 41.3–48.7 82.6 70.8–106.7 1.6 1.5–1.8 84.3b SR
  Tsassodji 102 55.9 52.1–61.4 125.6 104.4–164.8 2.0 1.8–2.2 67.7a R
  1. N: Total number of mosquitoes exposed to each insecticides; KDT50 and KDT95: Knockdown time (minutes) for 50% and 95% of mosquitoes; CL 95%: 95% confidence limits; RR50: Resistance ratio at Kd50 level (KDT50 of wild population / KDT50 of susceptible strain); Mortality (%): mortality rate 24 h post-exposure; S indicates susceptibility; SR indicates suspicion of resistance that needs to be confirmed; R suggests resistance.
  2. For each insecticide, numbers with different superscript differ significantly at 5% level.