Fig 2. Magnitude and frequency of antibody responses at three weeks after IIV3 administration for DNA-IIV3 prime-boost, IIV3 prime, or concurrent DNA/IIV3 prime.

The antibody responses were measured for the (A) ID route and (B) IM route by hemagglutination inhibition assay (HAI) and are displayed by group geometric mean titers (GMT) or group seroconversion rates for all 2012/13 vaccine strains, with error bars indicating the 95% CI. Comparisons were made between vaccine regimens for each route. Displayed p values for seroconversion rates were calculated based on Fisher’s Exact test, while GMT comparisons were based on pairwise T-test.