What is the problem of COVID-19 epidemic in national security?

Legal basis: Article 42 of the Law of People's Republic of China (PRC) on the Prevention and Control of Infectious Diseases. When infectious diseases break out and are prevalent, the local people's governments at or above the county level shall immediately organize forces to carry out prevention and control according to the prevention and control plan and cut off the transmission route of infectious diseases. When necessary, the following emergency measures can be taken and announced after reporting to the people's government at the next higher level. (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.