BEIJING, Aug. 19 (Xinhua) - A total of over 1.9 billion doses of COVID-19 vaccines had been administered in China as of Wednesday, data from the National Health Commission showed Thursday.

Students wait in the observation area after receiving COVID-19 vaccines at a vaccination site in Yinchuan, capital city of northwest China's Ningxia Hui Autonomous Region, Aug. 18, 2021. Ningxia on Wednesday started to administer vaccines to teenagers aged between 12 and 14. (Photo: Xinhua)