Effectiveness of a Second COVID-19 Vaccine Booster in Chinese Adults
Conditions
Interventions
- BIOLOGICAL: Intramuscularly administered Ad5-nCoV vaccine
- BIOLOGICAL: Aerosolized Ad5-nCoV
- BIOLOGICAL: DelNS1-2019-nCoV-RBD-OPT1
- BIOLOGICAL: SYS6006
Sponsor
Jiangsu Province Centers for Disease Control and Prevention