Summary of parasitological and geographic data per village, ordered within each district by increasing malaria prevalence detected by PCR.

1The exact location of Kapala was not recorded. 2 Transmission regions are defined as low intensity seasonal transmission (LIST); high intensity seasonal transmission (HIST) and perennial transmission (PT). 3 Microscopy prevalence is for any Plasmodium species. 4 PCR prevalence is for any species (P. falciparum, P. malariae or P. ovale) detected. 5 Fever is defined as axillary temperature ≥37.5°C. 6 Moderate anaemia is defined as Hb ≤8 g/dl. 7 People treated were at risk of progression to severe malaria, as defined in materials and methods. 8 People who slept regularly under a bednet.