A medical worker (1st L) administers a dose of COVID-19 vaccine to an employee at a mobile vaccination site inside the Internet of Things technology industrial park in Hefei City of east China's Anhui Province, on May 21, 2021. Mobile vaccination sites rebuilt based on public buses have been dispatched to industrial parks and major enterprises in Yaohai District of Hefei to accelerate vaccination work there. (Xinhua/Du Yu)
A medical worker (2nd L) administers a dose of COVID-19 vaccine to an employee at a mobile vaccination site inside the Internet of Things technology industrial park in Hefei City of east China's Anhui Province, on May 21, 2021. Mobile vaccination sites rebuilt based on public buses have been dispatched to industrial parks and major enterprises in Yaohai District of Hefei to accelerate vaccination work there. (Xinhua/Du Yu)
A medical worker administers a dose of COVID-19 vaccine to an employee at a mobile vaccination site inside the Internet of Things technology industrial park in Hefei City of east China's Anhui Province, on May 21, 2021. Mobile vaccination sites rebuilt based on public buses have been dispatched to industrial parks and major enterprises in Yaohai District of Hefei to accelerate vaccination work there. (Xinhua/Du Yu)
A medical worker administers a dose of COVID-19 vaccine to an employee at a mobile vaccination site inside the Internet of Things technology industrial park in Hefei City of east China's Anhui Province, on May 21, 2021. Mobile vaccination sites rebuilt based on public buses have been dispatched to industrial parks and major enterprises in Yaohai District of Hefei to accelerate vaccination work there. (Xinhua/Du Yu)
A medical worker administers a dose of COVID-19 vaccine to a resident at a vaccination site in a clinic at Mingchuan Township, Feixi County, east China's Anhui Province, on May 21, 2021. (Xinhua/Liu Junxi)
A medical worker administers a dose of COVID-19 vaccine to a resident at a vaccination site in a clinic at Mingchuan Township, Feixi County, east China's Anhui Province, on May 21, 2021. (Xinhua/Liu Junxi)
Medical workers administer a dose of COVID-19 vaccine to a resident at a vaccination site in a clinic at Mingchuan Township, Feixi County, east China's Anhui Province, on May 21, 2021. (Xinhua/Liu Junxi)
A medical worker (1st R) administers a dose of COVID-19 vaccine to a resident at a vaccination site in a clinic at Mingchuan Township, Feixi County, east China's Anhui Province, on May 21, 2021. (Xinhua/Liu Junxi)
A medical worker (1st L) administers a dose of COVID-19 vaccine to a resident at a vaccination site in a clinic at Mingchuan Township, Feixi County, east China's Anhui Province, on May 21, 2021. (Xinhua/Liu Junxi)
A medical worker administers a dose of COVID-19 vaccine to a resident at a vaccination site in a clinic at Mingchuan Township, Feixi County, east China's Anhui Province, on May 21, 2021. (Xinhua/Liu Junxi)
