Space-time Accompanying of Health Regulations for Epidemic Prevention and Control?

Spatio-temporal accompaniment means that within 14 days, patients and patients diagnosed in COVID-19 are in the same spatio-temporal grid (usually 800 m *800 m is the detection range), and * * * stays 10 minute.

For example, the patient diagnosed in COVID-19 has been to Xi 'an within 14 days, and the trajectory of you 14 days intersects with him. Whether it is a physical passing or a drift in communication signals, it may be considered as a space-time companion.

After the system detects that you are with the confirmed patient in time and space, and you belong to the space-time companion in the risk group, the color of the health code will turn yellow.

The transcoding condition is: do nucleic acid detection twice within three days, that is, after the health code turns yellow, there are more than two negative reports of nucleic acid detection at intervals of 24 hours in the first three days, which can automatically turn into green code.