A girl receives a dose of COVID-19 vaccine at a vaccination point in Jingning She Autonomous County in Lishui, east China's Zhejiang Province, Aug. 12, 2021. China is orderly propelling its vaccination program among minors aged between 12 and 17, on the premise of ensuring safety. (Photo by Li Suren/Xinhua)

A student receives a dose of COVID-19 vaccine at a vaccination point in Danzhai County, southwest China's Guizhou Province, Aug. 12, 2021. China is orderly propelling its vaccination program among minors aged between 12 and 17, on the premise of ensuring safety. (Photo by Yang Wukui/Xinhua)

A student receives a dose of COVID-19 vaccine at a vaccination point in Danzhai County, southwest China's Guizhou Province, Aug. 12, 2021. China is orderly propelling its vaccination program among minors aged between 12 and 17, on the premise of ensuring safety. (Photo by Yang Wukui/Xinhua)

A parent confirms vaccination information for her child at a vaccination point in Danzhai County, southwest China's Guizhou Province, Aug. 12, 2021. China is orderly propelling its vaccination program among minors aged between 12 and 17, on the premise of ensuring safety. (Photo by Yang Wukui/Xinhua)

A girl receives a dose of COVID-19 vaccine at a vaccination point in Jingning She Autonomous County in Lishui, east China's Zhejiang Province, Aug. 12, 2021. China is orderly propelling its vaccination program among minors aged between 12 and 17, on the premise of ensuring safety. (Photo by Li Suren/Xinhua)