1. If you are a close contact (hereinafter referred to as a secret contact), a close contact of a close contact (hereinafter referred to as a sub-secret contact), a general contact, a key risk person, etc.
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.
Extended data:
China Center for Disease Control and Prevention (hereinafter referred to as China Center for Disease Control and Prevention) was established on June 23rd, 2002. It is a public welfare institution headed by the National Health and Wellness Committee of People's Republic of China (PRC), which implements national disease control and public health technical management and services.