Fig. 4
Predicted seroprevalence across Haiti to A liver stage antigen-1 (LSA-1), B apical membrane antigen 1 (AMA1), and C merozoite surface protein 1 (MSP1). Tracking Results Continuously (TRaC) predictions are on the left panels and transmission assessment survey (TAS) on the right. Darker red to purple shading indicates higher seroprevalence, while paler shades of red to yellow indicate lower seroprevalence. Scale of shading is consistent for the same antigen target between two survey types. Department boundaries are outlined, and scale bar and north arrow illustrated. Pixel size is approximately 0.9 km2. Predicted seroprevalence was modeled by linking the observed seroprevalence at TAS or TRaC survey locations to environmental covariate data spanning all coordinate points across Haiti. Predicted seroprevalence was extracted as a continuous surface for mapping