Legal basis: Article 42 of the Law of People's Republic of China (PRC) on the Prevention and Control of Infectious Diseases stipulates that when an infectious disease breaks out or becomes prevalent, the local people's government at or above the county level shall immediately organize forces to prevent and control it according to the prevention and control plan and cut off the transmission route of the infectious disease. When necessary, the following emergency measures can be taken and announced after being reported to the people's government at the next higher level: (1) restricting or stopping fairs, theaters and other activities where people gather; (2) suspension of work, business or classes; (three) closed or sealed public drinking water sources, food and related items contaminated by infectious disease pathogens; (4) controlling or culling wild animals, domestic animals and poultry infected with the epidemic; (five) closed places that may cause the spread of infectious diseases.