The purpose of this study is to investigate the immunogenicity and safety of mRNA COVID-19 variant-containing vaccine formulations against the vaccine-matched variants and newly emerged variants of severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).
Protocol Amendment History
5 amendments
This ClinicalTrials.gov record has been amended 5 times since 2024-09-03; most recent amendment 2026-03-23.
Status change: Active, Not Recruiting → Recruiting2025-10-21
Status change: Recruiting → Active, Not Recruiting2025-03-16
Status change: Not Yet Recruiting → Recruiting2024-09-17