The experimental CoronaVac vaccine was manufactured by Sinovac Research & Development Co.,Ltd. Totally 1040 subjects,including: 130 subjects aged 18~25 years; 520 subjects aged 26~45 years, with 260 in each group; 130 subjects aged 46~59 years; 260 subjects aged ≥60 years.
Subjects will be assigned to receive two doses of medium-dosage vaccine on the schedule of 0,14.