A nurse takes a swab sample from a resident for COVID-19 test at a testing site in Jiangning District of Nanjing, capital of east China's Jiangsu Province, July 25, 2021. Nanjing, a mega-city with a population of more than 9.
A medical worker administers a dose of COVID-19 vaccine for a high school student at a vaccination site in Xicheng District of Beijing, capital of China, July 21, 2021. (Xinhua/Ren Chao) BEIJING, July 26 (Xinhua) -- More than 1.
A staff member checks tags on vials of COVID-19 vaccine at a packing line of Sinovac Life Sciences Co., Ltd.
An announcement of epidemic prevention and control is seen at Xishanqiao Toll Station on an expressway in Nanjing, east China's Jiangsu Province, July 25, 2021. Starting from 7 a.
