The yellow code turns green, and the code cannot be changed manually. After the yellow code, three nucleic acid tests are needed. If all the results are negative, the system will automatically turn green after one week of isolation without abnormality.
Characteristics of health code:
Through the color of health code, you can quickly identify whether a person has passed through provinces and cities with serious epidemic situation and whether he has directly or indirectly contacted infected people. Then through big data analysis, you can directly lock and find people who may be infected.
Health Code is a national unified health code system for epidemic prevention and control, which was developed by Alipay under the guidance of the E-government Office of the State Council Office, based on the national comprehensive government service platform, and drawing lessons from the experience of Zhejiang and other places in promoting health code mode and helping to return to work in an orderly manner.