A four-year-old girl receives COVID-19 vaccine at a vaccination site in Xuhui District of Shanghai, east China, Nov. 20, 2021. Shanghai started COVID-19 vaccination for children aged 3-5 from Saturday. (Xinhua/Liu Ying)
BEIJING, Nov. 21 (Xinhua) -- More than 2.43 billion doses of COVID-19 vaccine had been administered on the Chinese mainland as of Saturday, data from the National Health Commission showed Sunday. Enditem
