Fig 6. Percentage mortality of Ae. aegypti in the WHO bioassay for various insecticides by study arm in 2018 and 2019.

Boxes are median and interquartile range for percentage mortality in cohorts of mosquitoes derived from 12 wMel-treated clusters and 12 untreated clusters. Whiskers indicate the range, and circles indicate outliers. Insecticide type and concentrations used were in line with recommendations for Ae. aegypti mosquitoes and followed the WHO standard method [18]. The median (25^th– 75^th percentile) percentage mortality for the susceptible strain (Rockefeller) in 2019 is as follows: 100 (100–100) for cyfluthrin 0.15%; 91 (76–99) for malathion 0.8%; and 100 (97–100) for permethrin 1.25%.