A medical worker administers a dose of COVID-19 vaccine to a girl student at the Hangtian Campus of the Beijing Yuying School in Beijing, capital of China, on Aug. 21, 2021. (Xinhua/Ren Chao)
Medical workers administer doses of COVID-19 vaccine to students at the Hangtian Campus of the Beijing Yuying School in Beijing, capital of China, on Aug. 21, 2021. (Xinhua/Ren Chao)
Students wait to receive doses of COVID-19 vaccine at the Hangtian Campus of the Beijing Yuying School in Beijing, capital of China, on Aug. 21, 2021. (Xinhua/Ren Chao)
A medical worker inquires a girl student of her health condition before she receives a dose of COVID-19 vaccine at the Hangtian Campus of the Beijing Yuying School in Beijing, capital of China, on Aug. 21, 2021. (Xinhua/Ren Chao)
A medical worker administers a dose of COVID-19 vaccine to a boy student at the Hangtian Campus of the Beijing Yuying School in Beijing, capital of China, on Aug. 21, 2021. (Xinhua/Ren Chao)
