On February 25, in response to the question of whether the community should be closed or not, He Qinghua, a first-level inspector of the National Center for Disease Control and Prevention of the National Health and Health Commission, said that he should judge according to the risk level of the epidemic. In the middle-risk areas, the existing cases and epidemiological investigations and epidemic situation analysis are used as clues to determine the prevention and control management sites and personnel, and implement refined management. If it is an outbreak in a school, it must be accurate to the class, if it is public, it must be accurate to the workplace. In high-risk areas, it is necessary to restrict personnel gathering, and adopt closed management to restrict personnel access. (Edit Xiaozihe)

Editor-in-chief: [Liu Xian]