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Table 2 Knock-down times for 50 and 95 % of the Kisumu susceptible and the Pitoa resistant Anopheles gambiae s.l. strain to increased concentrations of deltamethrin on impregnated papers

From: When intensity of deltamethrin resistance in Anopheles gambiae s.l. leads to loss of Long Lasting Insecticidal Nets bio-efficacy: a case study in north Cameroon

Deltamethrin dosage (%) Kisumu strain Pitoa strain
  N kdT50[CI] (min) kdT95[CI] (min) N kdT50[CI (min)] kdT95[CI] (min) KdT50 ratio
0.001 80 34.6 [12.2–42.1] >60 78 >60 >60 2.2
0.005 96 18.6 [17.9–19.4] 26.1 [24.4–28.9] 67 48.3 [40.7–60.2] >60 2.5
0.01 68 18.4 [17.5–19.4] 27.2 [24.9–31.0] 98 21.7 [18.5–24.9] 57.2 [45.8–82.3] 1.2
0.05 90 3.9 [5.9×10–6–2.6×106] 17.7 [9.1×10−3–3.4×104] 110 17.8 [15.9–19.6) 59.3 [52.0–69.9] 4.6
0.1 92 1.3 [7.5×10−5–2.6×104] 9.3 [0.06–1.4×103] 74 9.6 [8.6–10.0] 32.3 [28.0–38.5] 7.4
0.5 94 0.8 [1.8×10−8–3.7×107] 6.6 [2.5×10−4–1.6×105] 87 7.0 [4.0–9.0] 17.2 [14.1–24.3] 8.7
  1. N Sample size, CI confidence interval at 95 %, kdT50 Knockdown times for 50 % of exposed mosquitoes, kdT 95 Knockdown times for 95 % of exposed mosquitoes, min time in minutes