Figure 4.
Induction of neutralizing antibodies by MVA-ZIKV in immunocompetent mice. Balb/c mice were immunized with MVA-ZIKV/MVA-ZIKV or MVA-WT/MVA-WT and 10 days after the last immunization ZIKV-specific humoral immune responses were analyzed (see Methods). (a) Percentage of ZIKV plaque reduction. Data represent the percentage of ZIKV plaque reduction, determined by a PRNT assay, from each individual serum sample at different serial dilutions. (b) ZIKV-neutralizing antibody titers. Data represent the reciprocal of the serum dilution that inhibited plaque formation by 90% (PRNT90), relative to samples incubated with negative control sera. Dashed line indicates the limit of detection (LOD) of the neutralization assay (1/20 dilution). The statistically significant difference between both groups is indicated (*P < 0.05).