The Efficacy of Vectron 20 WP, Etofenprox, for Indoor Residual Spraying in Areas of High Vector Resistance to Pyrethroids and Organochlorines in Zambia
Table 1
Monthly 24−hour percentage mortality rates of An. gambiae s.s after exposure to etofenprox (Vectron 20 WP), bifenthrin (Bistar 10 WP) and lambda-cyhalothrin (Icon 10 CS) sprayed surfaces.
Month
[95% CI]
[95% CI]
[95% CI]
[95% CI]
Control
Vectron 20 WP
Bistar 10 WP
Icon 10 CS
Dec-09
0 (30)[⋯−⋯]
100 (30)[⋯−⋯]
100 (28) [⋯−⋯]
[⋯−⋯]
1
100 (30) [⋯−⋯]
[⋯−⋯]
1
Jan-10
0 (30) [⋯−⋯]
100 (30) [⋯−⋯]
100 (34) [⋯−⋯]
[⋯−⋯]
1
100 (30) [⋯−⋯]
[⋯−⋯]
1
Feb-10
0 (30) [⋯−⋯]
100 (45) [⋯−⋯]
100 (45) [⋯−⋯]
[⋯−⋯]
1
100 (41) [⋯−⋯]
[⋯−⋯]
1
Mar-10
0 (25) [⋯−⋯]
100 (35) [⋯−⋯]
90 (30) [79.26−100.74]
[⋯−⋯]
0.468
100 (35) [⋯−⋯]
[⋯−⋯]
1
Apr-10
0 (30) [⋯−⋯]
100 (43) [⋯−⋯]
90 (30) [79.26−100.74]
[⋯−⋯]
0.468
100 (40) [⋯−⋯]
[⋯−⋯]
1
May-10
0 (25) [⋯−⋯]
86.7 (30) [74.51−98.83]
83.3 (30) [69.99−96.67]
0.77 [0.19−3.20]
0.794
100 (30) [⋯−⋯]
[⋯−⋯]
0.331
Jun-10
0 (25) [⋯−⋯]
76.7 (30) [61.54−91.80]
74.3 (35) [59.81−88.77]
0.88 [0.27−2.74]
0.845
88.7 (30) [77.33−100.01]
2.38 [0.58−9.76]
0.351
Jul-10
0 (20) [⋯−⋯]
75.8 (33) [61.14−90.38]
70.7 (41) [56.80−84.66]
0.77 [0.27−2.19]
0.673
79.8 (35) [66.39−93.03]
1.26 [0.40−3.95]
0.748
Aug-10
0 (20) [⋯−⋯]
73.8 (42) [60.51−87.11]
63.3 (30) [46.09−80.57]
0.61 [0.22−1.69]
0.37
77.0 (30) [61.94−92.06]
1.88 [0.40−3.55]
0.794
Significance of change between Vectron 20 WP and Bistar 10 WP, Significance of change between Vectron 20 WP and Icon 10 CS.
