Supplementary Material 2: Table S1. Univariate analysis of factors associated with basic IRS knowledge among participants. Table S2. Univariate analysis of factors associated with IRS implementation among households. Table S3. Univariate analysis of factors associated with malaria case diagnosis. Fig. S1. Use of ITNs in Zambia between 2010 and 2020 and correlation with malaria incidence. (A) Use of ITNs in Zambia between 2010 and 2020. (B) Correlation of ITN usage and malaria incidence.