In marmosets inoculated with DENV2 AI genotype, the virus titers of the DENV2 CM genotype were higher with a mean infection-enhancement of 2.7-fold in the presence of 1:100 diluted plasma than in the absence of plasma when inoculated in the FcγR-expressing BHK cells (Figure 4c). This evidence concerns the gene FCGR2A and infection.