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Alluvial diagram of serology from acute serum samples used in a study of Orientia genus endemicity among severe infectious disease cohorts, Uganda. The diagram represents Orientia spp.–positive immunofluorescent assay IgG at >128, >256, and >512 from 3 sites in Uganda. Colored lines indicate total participants from each site with positive or negative serology at 3 different titer cutoffs. Neg, negative; pos, positive.
