摘要 : Summary What is already known about this topic?Compared with the international mRNA and adenovirus-vectored coronavirus disease 2019(COVID-19)vaccines,there is less real-world research data about breakthrough cases in people vacci... 展开 Summary What is already known about this topic?Compared with the international mRNA and adenovirus-vectored coronavirus disease 2019(COVID-19)vaccines,there is less real-world research data about breakthrough cases in people vaccinated with China-made COVID-19 vaccines.Analyses of clinical outcomes of breakthrough cases will be an important supplement to the clinical trial efficacy and observational effectiveness data of China-made COVID-19 vaccines. 收起