A medical worker administers a dose of COVID-19 vaccine for a student at a vaccination site in Jinfeng district of Yinchuan, northwest China's Ningxia Hui Autonomous Region, Aug. 15, 2021. (Xinhua/Feng Kaihua)

BEIJING, Sept. 13 (Xinhua) -- Nearly 2.15 billion doses of COVID-19 vaccines had been administered in China as of Sunday, data from the National Health Commission showed Monday.