Insecticide induced exophily of resistant and susceptible populations
The proportion of mosquitoes that were caught in the window exit trap when treated bed net trap was present was 5.2% (95% CI= [4.2-6.4]) for the resistant colony and 11.5% (95% CI=[9.6-12.6]) for the susceptible colony. When the untreated bed net was present, the number of mosquitoes exiting reduced for both groups; 2.4% (95% CI=[1.8-3.3]) of resistant population exited and 3% (95% CI=[1.8-3.5]) for the susceptible population (Table 1). Overall, the resistant population was less likely to exit the house if any of the treatment was present compared to the susceptible population (GLM, OR=0.54; 95% CI=[0.432-0.674]; P<0.0001). The susceptible females were 4.6-fold more likely to exit the house when treated bed net (11.5%) was present than when untreated bed net (3%) was used (GLM, OR=4.64; 95% CI=[3.3-6.5]; P<0.0001). For the wild field population, 4% (95% CI= [2.2-5.6]) of the recovered mosquitoes were caught in the exit trap when the treated bed net trap was present, while 3.4% (95% CI=[1.9-5.1]) when the untreated net was used. Even though the field population was likely to exit the house when a treated bed net was present, this was not statistically significant (GLM, OR=1.12; 95% CI=[0.58-2.15]; P=0.719).