FIG. 2.

Correlation between salivary IgG levels determined by the PanBio Dengue Duo ELISA and serum antibody levels determined by HAI. Individual assay values are shown by open circles, while the mean ELISA IgG ratio for different groupings is shown by a horizontal bar. There was a significant association between mean ELISA IgG ratio and HAI titer (analysis of variance, F = 14.2; P < 0.0001) as well as a significant correlation between individual IgG levels and HAI titer (Pearson’s r = 0.78, P < 0.0001).