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Table 2 Emergence and emergence inhibition rates after exposure of first-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 200 17 10 14 200 118 33 10
 ER (% [95% CI]) 100 [98–100] 9 [5–13] 5 [3–7] 7 [4–10] 100 [98–100] 59 [52–66] 17 [12–22] 5 [2–8]
 EIR (%) 92 95 93 42 84 95
6
 N 200 200 200 200 200 200 200 200
 NE 200 21 40 32 200 186 110 145
 ER (% [95% CI]) 100 [98–100] 11 [7–15] 20 [15–25] 16 [12–20] 100 [98–100] 93 [89–97] 55 [48–62] 73 [66–80]
 EIR (%) 90 80 84 7 45 28
12
 N 200 200 200 200 200 200 200 200
 NE 200 88 92 60 200 195 182 161
 ER (% [95% CI]) 100 [98–100] 44 [37–51] 46 [39–53] 30 [24–36] 100 [98–100] 98 [94–100] 91 [86–96] 81 [74–88]
 EIR (%) 56 54 70  - 3 9 20
  1. N the number of larvae, NE the number of larvae emerged, ER the emergence rate, EIR the emergence inhibition rate