Indoor and outdoor resting behavior in response to insecticide-treated and untreated bed net.
The proportion of resistant females caught resting indoors in the hut when a volunteer slept under a treated bed net trap was lower 46.2%compared to susceptible females 53.8% (OR=1.4; 95% CI= [1.23-1.62]; P<0.0001). The susceptible females were 1.4 more likely to avoid biting a host sleeping under a treated bed net and resort to search for a host elsewhere or rest away from the intervention, unlike the resistant females. When untreated bed net was in place, there was no difference observed between the proportions of resistant females and susceptible females caught resting indoors in the hut (OR=1.1; 95% CI=[0.97-1.28]; P=0.121).The proportion of susceptible females caught resting outdoors when a treated net was used, was higher 64.5% compared to resistant females 35.4%. The susceptible population was 2.3 times more likely to stay outdoors away from the treated bed net (OR=2.25; 95% CI= [1.7-2.9]; P<0.0001; Fig. 4).
For wild population the proportion of females caught resting indoor or outdoor when a treated bed net was present was 52.03% vs 52.2% respectively compared to the untreated bed net trap (47.9% vs 47.8% respectively, Fig. 4). Even though the proportion resting indoor or outdoor was high when the treated bed net was present, there was no significant difference (Indoor: OR=1.2; 95% CI=[0.94-1.54]; P=0.139; outdoor: OR=1.11; 95% CI=[0.72-1.71])