What do you mean by crossing time and space? Do people need to be isolated?

1 What do you mean by the intersection of time and space? The intersection of time and space is actually the companionship of time and space.

The concept of "space-time crossing" is the same as that of "accompanying space-time", which refers to people who stay with the diagnosed patients for 14 days in the same space-time grid (usually 800 m× 800 m as the detection range).

In layman's terms, for example, an infected person has been to a place within 14 days, and the trajectory of your 14 days intersects with him. Whether it is a physical brush or a drift in communication signals, it may be considered as a problem of time and space.

2 How is the intersection of time and space found? The intersection of time and space is located by the mobile phone number of residents.

Space-time intersection means that my phone number and confirmed number stay together for more than 10 minute in the same space-time grid with the range of 800M×800M, and the cumulative stay time of any number exceeds 30 hours in the last 14 days. If the number found is the time companion number, my health code will turn yellow and be marked as "time companion" by the system.

Do people at the intersection of time and space need to be isolated? Not yet.

"Time-space intersection" is a technical term of public security and telecommunications departments. Space-time intersection and space-time accompaniment are the same concept, which means staying in the same space-time grid (800 m× 800 m) with the diagnosed patient within 14 days 10 minutes. In layman's terms, it is crossed with the travel trajectory of the confirmed patient 14 days. No matter whether the communication signal drifts or passes by, it may be considered as a time-space intersection crowd.

The health code will turn yellow after being judged by the system as crossing time and space, but for this kind of personnel, it is necessary to carry out nucleic acid detection twice every three days, and then restore the green code after all the nucleic acid detection results are negative. If it is only the intersection of time and space, there is generally no need for isolation.

Is the concept of space-time intersection the same as that of dense connectors? number

Space-time intersection means that my phone number is detected by the epidemic prevention system, and the associated phone number of the confirmed patient stays in the same space-time grid (800 m *800 m range) for more than 14 minutes, and any number stays for more than 30 hours in the recent 14 days, then the found number is a space-time adjoint number, and I will also be marked as "space-time intersection".

Close contacts refer to people who have close contact with suspected cases and confirmed cases but have not taken effective protection 2 days before symptoms appear or 2 days before asymptomatic infection samples are collected. The concepts of the two are completely different, but both have certain risks. Both of them need to do a good job of personal protection and report in time.