If the health code is abnormal, please report it to your community as soon as possible; If you haven't been to high-risk areas, it is recommended to transcode through Alipay's "online appeal" in time.
Several common possible situations of code change in mobile phones indicate that you may have visited medium and high risk areas; People who have had close contact with confirmed cases or infected people through information such as people flow, travel and shopping. Be judged as close contacts, sub-close contacts, high-risk groups, etc. ; Maybe your nucleic acid test results are positive; It may overlap with infected people in the scene of flights, high-speed rail, buses, subways and other means of transportation or supermarkets.
If the health code turns red and yellow, from the perspective of epidemic prevention, it may belong to people with certain risk of infection. Please take the initiative to report to the community, unit, school or hotel according to the pop-up prompts, and truthfully and accurately provide my recent residence history, contact history and personal health status, and do not conceal or omit. Cooperate with epidemiological investigation, health investigation, nucleic acid detection, isolation observation and other prevention and control measures.
The above contents refer to Baidu Encyclopedia-Health Code.