Nucleic acid tests required for all teachers in Xiangyang before return to work

Teachers wait in line to take nucleic acid tests in Fancheng District of Xiangyang City, central China's Hubei Province, April 18, 2020. In order to ensure the safety of teachers and students, all teachers in Xiangyang City are required to accept nucleic acid tests before they return to work. (Photo by Xie Jianfei/Xinhua)