The Spatial Limits of P. falciparum Malaria Risk Defined by <i>Pf</i>API with Further Medical Intelligence, Temperature, and Aridity Masks

Areas were defined as stable (dark grey areas, where PfAPI ≥ 0.1 per 1,000 pa), unstable (medium grey areas, where PfAPI < 0.1 per 1,000 pa), or no risk (light grey, where PfAPI = 0 per 1,000 pa) [17–19]. The community surveys of P. falciparum prevalence conducted between January 1, 1985 and July 31, 2008 are plotted. Of the 8,938 surveys collected, 7,953 satisfied our inclusion criteria for modelling (see Methods and Protocol S1.2) and are shown here. The survey data shown are age-standardized [51] (PfPR₂₋₁₀) and shown as a continuum of yellow to red from 0%–100% (see map legend). The dashed lines separate the America; Africa+; and the CSE Asia regions.