Fig. 2: Baseline RSV-specific NAb levels.

a, GMC of NAb by gestational age. b, GMC of RSV pre-F, post-F, Ga, Gb and N IgG antibodies by gestational age. c, GMC of NAb by infant age. d, GMC of pre-F, post-F, Ga, Gb and N IgG antibodies by infant age. *P < 0.05, ***P < 0.001. Data are presented as GMCs ± 95% CIs, which were calculated assuming log normal distribution. Two-sided P values were calculated based on the F statistic from ANOVA, without adjustment. In a, P = 0.0005 and P = 0.0274 for the phase 2b study and MELODY, respectively. In b, differences between groups within the phase 2b study were statistically significant (all P < 0.0001); for MELODY, only Gb was statistically different (P = 0.0406). In c, P < 0.0001 for both the phase 2b study and MELODY. In d, differences between groups within the phase 2b study and MELODY were statistically significant (all P < 0.0001).