A Study of the Immunogenicity and Safety of SCTV01C in Population Aged ≥12 Years and Previously Vaccinated With Inactivated COVID-19 Vaccine

This is a randomized, double-blind, approved vaccine-controlled Phase II booster study to evaluate the immunogenicity and safety of SCTV01C compared with Comirnaty in participants aged ≥12 years and previously fully immunized with inactivated COVID-19 vaccine.