Google search query models as compared to official case data. Model fitted curves built on Google search queries (dashed line, colour) are juxtaposed against the official malaria case data for Thailand (solid line, black). All data shown are at a monthly resolution. Shaded regions indicate the validation year used for testing the final models. (A) Microscopy model: green; (B) Automatic model: light blue; (C) Stepwise model: dark blue; (D) Physician model: red.