After the health code changes color, there will be no prompt. I need to open the health code to display the changed health code, and report it as soon as possible after the health code changes color, so as to protect myself.
You can call the local CDC or community phone to report. Warmly remind you that if you find yourself a close contact with COVID-19, please isolate yourself at the first time to avoid contact with others, and then report to the community or CDC, waiting for the staff to arrange isolation or home isolation. Generally, we will give you a nucleic acid test twice in three days, with a sampling interval of 24 hours (that is, "twice every three days"). After the nucleic acid result is negative, your health code will automatically turn into a green code after being confirmed by the relevant departments.