Data collection
malaria
MALARIA, DISEASE
During each cross-sectional survey 55 households meeting the eligibility requirement were randomly sampled in each cluster. Household characteristics and information about number of residents, household wealth and mosquito net ownership and usage was collected using an electronic form programmed to run on personal digital assistants (PDAs) with Pendragon software (Universal version, Pendragon Software Corporation, Chicago, United States). In each household, up to three eligible children were selected at random for malaria Monthly entomological cross-sectional surveys were conducted during the trial, with collections carried out between 3 January and 15 December 2017 for the third year. For each round, seven households per cluster were randomly selected and a Centers for Disease Control and Prevention (CDC) light trap was installed at the foot of a bed in one of the bedrooms and monitored for one night to assess vector density. Existing nets were not removed, but a new standard LLIN was hung up if the bed selected for CDC light trap had no net. Anophelines were morphologically identified to species or species complex and a PCR Taq Man assay was used to distinguish the two sibling species 