Low and high doses of study vaccine were compared with control groups to evaluate the safety and immunogenicity of the study vaccine.
Subjects aged 18 and above who have been completed primary or booster vaccination of COVID-19 inactivated vaccines for 3 months or more, to conduct a randomized, parallel controlled, double-blind, single-center phase I clinical trial of Recombinant variant COVID-19 vaccine (Sf9 cell)(WSK-V102) to evaluate the safety, tolerance and immunogenicity of this vaccine in the study population.