Figure 1.
Study flowchart. Plasma samples collected from eight district hospitals in Khon Kaen, Roi Et, Maha Sarakham, and Kalasin provinces from June 2016 to October 2017. CHIKV = chikungunya virus; DENV = dengue virus; nsP1 = nonstructural protein 1; nsP3 = nonstructural protein 3; RDT = rapid detection test.