Shanghai is in the stage of consolidating the results of clearing out the virus. Although it has achieved social cleanup, the risk of finding positive infections among risk groups still exists, and the pressure to prevent a rebound is still great. This requires us to strictly control the epidemic, conduct epidemiological investigations, and quickly carry out emergency response work. The 16 districts in Shanghai have achieved social clearance, and then there may be sporadic new positive infections in the society. Once a positive infected person appears in society, the "2+4+24" work requirements are strictly implemented, that is, the flow investigation team arrives at the scene within 2 hours, completes the core information of the flow investigation within 4 hours, and initially investigates the basic situation and completes the flow investigation report within 24 hours.

Relying on the epidemiological investigation emergency command system, give full play to the collaborative working mechanism of public health, public security, industry and information technology, and combine on-site investigations and big data information to conduct comprehensive analysis , Scientific research and judgment, checking activity trajectories, targeting risk groups, rationally judging close contacts and close contacts, so as to "check as much as possible, judge as much as possible, and do not miss anyone". Strictly implement various control measures. First, we should "move as much as possible". After discovering a positive infected person, you should contact the city and district transfer department as soon as possible. Under the premise of ensuring safety, the transfer of the positive infected person should be completed in the fastest time and with the highest efficiency.

Close contacts identified through investigation should be separated as quickly as possible to minimize the risk of transmission. Carry out timely risk investigation and control on the important places or key areas involved. At the same time, we will combine environmental testing and laboratory virus gene sequencing to trace the origin of the epidemic. Provide relevant information truthfully and accurately, implement isolation and control measures in a timely manner, and prevent the epidemic from spreading faster. This is not only to protect yourself, your family and others, but also to restore normal life in Shanghai as soon as possible. Medical and health departments should always be prepared and not take it lightly. Whether in the fever clinic or the isolation ward, the preparation of various personnel and materials cannot be slacked off. Once individual sporadic cases are discovered, the virus can be blocked as soon as possible to prevent its progression.