Participant characteristics
Between June 1Study profile. *: One participant should be in 2C cohort but was wrongly allocated into 3C cohort in randomization procedure. In the statistical analysis, the participant was swich to 2C cohort.The baseline characteristics of participants were similar between the trial and control groups within 2C or 3C cohort, respectively (Baseline demographic and clinical characteristics of participants.Results are shown for the FAS population. *: P values were calculated for comparison between the 2C trial group and the 3C control group.Given that the 2C and 3C trial groups shared the same control group (the 3C control group) in the primary immunogenicity analysis, participants’ demographic characteristics across cohorts were also shown (