Clinical Study of Recombinant Novel Coronavirus Vaccine
Conditions
Interventions
- BIOLOGICAL: Recombinant new coronavirus vaccine (CHO cell) low-dose group
- BIOLOGICAL: Recombinant new coronavirus vaccine (CHO cells) high-dose group
- BIOLOGICAL: Recombinant new coronavirus vaccine (CHO cells) placebo group
Sponsor
Anhui Zhifei Longcom Biologic Pharmacy Co., Ltd.