The discoloration of health code is to inform the public of the potential risk of transmission in time and remind the public to pay attention to their health status. According to the epidemic prevention policy, "yellow code" indicates the need for home isolation, and "red team" indicates the need for centralized isolation.
When citizens find that their health codes have changed in "red code" or "yellow code", they should immediately report to their communities, cooperate with the investigation and management, report health information in the "Health Declaration" of the "Wuhan War and Epidemic" WeChat applet in time, actively cooperate with health monitoring and management according to regulations, and accept nucleic acid sampling and testing according to the prescribed frequency.