Safety, and Immunogenicity Study of the Recombinant Two-component COVID-19 Vaccine (CHO Cell)
Conditions
Interventions
- BIOLOGICAL: Part1:Recombinant two-component COVID-19 vaccine (CHO cell)
- BIOLOGICAL: Part1: Placebo
- BIOLOGICAL: Part2: Recombinant two-component COVID-19 vaccine (CHO cell)
- BIOLOGICAL: Part2: COVID-19 Vaccine, mRNA
Sponsor
Jiangsu Rec-Biotechnology Co., Ltd.