Figure 3

Mean An. darlingi captured, prepared to bite/person/hour and percent of mosquitoes that were An. darlingi. Captures were conducted by mechanical aspiration from 7–11 pm (the known peak biting time), on the porch of households4. An. darlingi are known to bite in and near human households[4]. There were 10 MINSA entomologists, working in pairs, to give a total of 5 entomologic captures/night. The households were chosen from the sentinel houses in at-risk zones selected for human infection surveillance. In at-risk zones where there were more than 5 houses, 5 of the sentinel houses were randomly selected for entomologic captures. Each month, 5 at-risk zones were included, with 5 houses each, for 4 weekly captures in each house.