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).