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Table 3 Emergence and emergence inhibition rates after exposure of second-instar larvae of Anopheles gambiae to the treatments

From: Impact of sunlight exposure on the residual efficacy of biolarvicides Bacillus thuringiensis israelensis and Bacillus sphaericus against the main malaria vector, Anopheles gambiae

N day post-treatment Covered containers Uncovered containers
Control 1 g/m2 1.5 g/m2 2 g/m2 Control 1 g/m2 1.5 g/m2 2 g/m2
0
 N 200 200 200 200 200 200 200 200
 NE 191 23 20 18 171 40 25 1
 ER (% [95% CI]) 96 [92–100] 12 [8–16] 10 [7–13] 9 [6–12] 86 [80–92] 20 [15–25] 13 [9–17] 1 [0–2]
 EIR (%) 88 90 91 77 85 100
10
 N 120 120 120 120 120 120 120 120
 NE 108 76 56 74 106 98 100 110
 ER (% [95% CI]) 90 [83–97] 63 [54–72] 47 [38–56] 62 [53–71] 88 [81–95] 82 [74–90] 83 [76–90] 92 [85–99]
 EIR (%) 30 48 31 8 6 0
21
 N 200 200 200 200 200 200 200 200
 NE 189 183 177 180 200 195 186 196
 ER (% [95% CI]) 95 [91–99] 92 [88–96] 89 [85–93] 90 [86–94] 100 [98–100] 98 [96–100] 93 [91–95] 98 [95–100]
 EIR (%) 3 6 5 3 8 3
  1. N the number of larvae, NE the number of larvae emerged, ER the emergence rate, EIR the emergence inhibition rate