A medical worker administers a dose of the COVID-19 vaccine to a boy at a vaccination site in Xuhui District of Shanghai, east China, Sept. 3, 2021. (Xinhua/Liu Ying)
BEIJING, Oct. 11 (Xinhua) -- Over 2.221 billion doses of COVID-19 vaccine had been administered on the Chinese mainland as of Sunday, data from the National Health Commission showed Monday.
原文地址：http://en.people.cn/n3/2021/1011/c90000-9905677.html