Home isolation is required when the following conditions exist in an individual: 1. Persons returning from key infected areas such as Hubei, and all close contacts with confirmed cases, are required to be placed under medical observation at home. The observation days are calculated from the time of the last contact and the medical observation is for 14 days; 2. After the new pneumonia patient is cured, it is recommended to continue home observation for about 14 days. Home isolation conditions: The family of the home observer should prepare a separate room, so that one person can be alone in one room, while paying attention to cleanliness and disinfection. Those who do not have the conditions for observation should report to the local community, street, township party committee and government to implement centralized medical observation.