How long does it take for the Shanghai travel code to turn red?

The trip code turned red in Shanghai, and changed back to green after leaving Shanghai 14.

If you go to the high-risk area within 14 days, a red card will be displayed. After 14 days, the previous information will be cleared and the red Shanghai will no longer be displayed. If it is only one way, only this prefecture-level city will turn red, and the code will not turn red.

It is best to isolate the travel code when the whole turns red. If there is no relevant epidemic situation, the displayed red team can be isolated according to local requirements. If you just touched it, there is no problem. The health code is displayed in red. After entering the community, users need to be quarantined at home for 14 days, and then someone will take their temperature every day and fill out the form as required.

Brief introduction of trip code:

Travel code is the code of communication big data travel card, which is also equivalent to health code. China Institute of Information and Communication, together with China Telecom, China Mobile and China Unicom, used mobile phones to receive data, which was obtained through the location of the base station where the users' mobile phones were located, providing free inquiry service for the 654.38+06 billion mobile phone users nationwide. Mobile phone users can query all the city information they have been to before 654.38+04 days through this service.

One of the basic tasks of epidemic prevention and control is to trace the source, that is, to trace the source. We don't care about the quality of users or individuals, because the premise is that what can come out and circulate must be good, otherwise the relevant organizations or individuals will be responsible.