Figure 2

Dengue virus (DENV) exposure timeline of PRNT titers included in this review. Articles above the timeline reported transitions between exposure states while articles below reported single states. 1°, 2°, and 3° abbreviate primary, secondary, and tertiary exposures; “n” indicates the numbers of individuals who contributed titers that met inclusion and exclusion criteria; “Days Post” indicates the number of days between DENV exposure and serum collection.