Fig 4. Effect of insect screens on inside infestation and density of triatomines.

Triatomines were collected by community participation and by mice-baited traps in houses with insect screens (black bars) and control houses with no vector control intervention (white bars), during three years of follow-up of the intervention. Inside infestation index (A) and proportion of bugs collected inside (B) were measured. Data are presented as mean ± 95% confidence interval. * and *** indicate significant differences between groups (P<0.05 and P<0.001, respectively).