Additional file 1: Table S1. Primary occupations by district and malaria status. Table S2. Formative Assessment findings in the districts of Antsirabe II and Faratsiho (combined) and Antsiranana I. Figure S1. Monthly enrollment of cases and controls between October 2021 and March 2022 in the selected health facilities in study districts of Antsirabe II and Faratsiho.