1,200
Participants
Start Date
June 1, 2020
Primary Completion Date
June 30, 2024
Study Completion Date
December 31, 2024
the inactivated COVID-19 vaccines
receive the doses of inactivated COVID-19 vaccines
RECRUITING
The Affiliated Hospital of Zhejiang Chinese Medicine University, Hangzhou
Zhejiang Chinese Medical University
OTHER_GOV