Comparative Safety and Effectiveness of Heterologous CoronaVac-ChAdOx1 versus Homologous CoronaVac Vaccination in a Real-World Setting: A Retrospective Cohort Study

在真实世界环境中，异源CoronaVac-ChAdOx1疫苗与同源CoronaVac疫苗的安全性和有效性比较：一项回顾性队列研究