What do you mean by the intersection of time and space in COVID-19?

COVID-19's spatio-temporal intersection refers to people who stay with the diagnosed patients for 14 days and * * * stay 10 minute in the same spatio-temporal grid (usually 800 m× 800 m as the detection range).

The concept of space-time intersection is the same as that of space-time companionship, which refers to the person who stays in the same space-time grid with the diagnosed patient for 10 minutes within 14 days. 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 the intersection of time and space.

Experts said that screening the intersection of time and space can find potential risk groups to the greatest extent, and include more people with overlapping time and space who may be infected into key investigations, so as to truly achieve early detection and early prevention and control.

After receiving the prompt message marked "Intersection of Time and Space", you should:

1. Contact the community, unit or hotel immediately, inform the news in time, and implement epidemic prevention and control measures such as nucleic acid detection as required, and do personal protection;

Second, do health monitoring. If you have symptoms such as fever, dry cough, stuffy nose, runny nose, fatigue, sore throat, and decreased sense of smell (taste), you should go to a medical institution in time and inform the doctor. Please do personal protection during medical treatment and do not take public transport;

Three, actively cooperate with the completion of community epidemic prevention and control measures, earnestly fulfill the obligation of epidemic prevention and control.