Intervention
Both IRS and LLIN distributions were conducted in February 2015. 45,000 standard LLIN, Olyset LLIN (Sumitomo Chemical, Japan), containing 20 g/kg of the pyrethroid permethrin, and 45,000 PBO-Pyrethroid-LLIN, Olyset Plus (Sumitomo Chemical, Japan), containing PBO (10 g/kg) and the pyrethroid permethrin (20 g/kg) were distributed in the allocated study groups to provide one LLIN per two persons. The organophosphate insecticide Actellic