A student receives a dose of COVID-19 vaccine at a vaccination site in Yinchuan, capital city of northwest China's Ningxia Hui Autonomous Region, Aug. 18, 2021. (Photo: Xinhua)

BEIJING, Aug. 25 (Xinhua) -- More than 1.97 billion doses of COVID-19 vaccines had been administered in China as of Tuesday, data from the National Health Commission showed Wednesday.