What is the reason why Changchun CDC called me?

That is, you have had close contact with confirmed cases or asymptomatic infected people recently, or have had close contact with cases.

For the health and safety of you and your family, so that people who may be infected can be investigated and treated as soon as possible, please provide information patiently and truthfully. The CDC staff will first verify whether the contents in the investigation letter are accurate, whether I am in the jurisdiction and the specific location. If you are in the jurisdiction, continue to ask your basic information (name, ID number, current address, work unit, etc. ). Next, ask about your action track and specific time in recent days, who you contacted, where you went, your peers, your roommate and all the people you might contact. If the transferred person is not in the jurisdiction, it is necessary to find out his current position and report it to the superior disease control department, which will transfer it to the local disease control department for investigation.

The CDC, like other departments, has fulfilled its duties, firmly built a strict defense line of "external defense against input and internal defense against rebound" and implemented all measures meticulously. At present, most of the information mainly comes from the following three aspects: first, the investigation letter sent by the disease control department or the administrative department at a higher level, including close contacts (referred to as secret contacts), close contacts of close contacts (referred to as sub-secret contacts), general contacts, and key risk personnel. The second is the list of epidemic-related personnel in key areas pushed by big data. The third is the process adjustment of the case or close contact. The sending time of investigation information is uncertain, which may be in the daytime or in the early morning. After receiving the investigation letter, the CDC staff need to complete the process adjustment or information verification immediately. If the information in the investigation letter is incomplete and there is no contact information, the public security system needs to cooperate.