Study of Inactivated SARS-CoV-2 Vaccine (Vero Cells) in Healthy Population Aged 3 to 17 Years(COVID-19)

"2 doses of SARS-CoV-2 Vaccine (Vero Cells), Inactivated with a 28-day interval constitute a primary immunization course. The third dose on 6 months after primary course is the booster dose.~Administer as an intramuscular injection into the lateral deltoid of the upper arm."

2 doses of Placebo should be administered as an intramuscular injection into the lateral deltoid of the upper arm with a 28-day interval.