Current primary outcome measure as of 25/05/2022: Solicited systemic reactions measured by self-report 7 days after booster immunisation in Cohort A or 7 days after third dose in Cohort B _____ Previous primary outcome measure: Solicited systemic reactions measured by self-report 7 days after booster immunisation

Current primary outcome measure as of 25/05/2022: Solicited systemic reactions measured by self-report 7 days after booster immunisation in Cohort A or 7 days after third dose in Cohort B _____ Previous primary outcome measure: Solicited systemic reactions measured by self-report 7 days after booster immunisation

Solicited systemic reactions measured by self-report 7 days after booster immunisation

Solicited systemic reactions measured by self-report 7 days after booster immunisation