How to calculate the intersection with confirmed cases?

It is understood that time-space intersection is the same concept as another saying, that is, within 14 days, it stays in the same time-space grid with the diagnosed patient (usually 800 meters *800 meters as the detection range), and * * * stays for 10 minutes.

In layman's terms, for example, if the confirmed patient has been to Fuzhou within 14 days, the trajectory of you 14 days intersects with him. Whether it is physical transmission or drift of communication signals, it may be considered as a problem of time and space. The health code will turn yellow when the system detects that you are with the confirmed patient in time and space, and you belong to the time and space partner in the risk group. How to turn the yellow code of time and space partner into the green code? According to the requirements of nucleic acid detection, the health code returned to normal after the result was negative.

This is the technical term of the public security and telecommunications departments. Using the concept of time-space crossing population in epidemic tracking can find the potentially dangerous population as much as possible, and bring more people who may be infected because of time-space crossing into epidemiological monitoring, which plays an important role in finding positive cases in time, and of course means that the workload of epidemiological monitoring has doubled.

The Provincial Health and Wellness Committee issued a health reminder: The recent epidemic prevention and control situation is severe and complicated. Please strictly observe the prevention and control measures such as code scanning, temperature measurement, wearing a mask, gathering less, keeping a line, etc., and do not flow unless necessary. If you have symptoms such as fever, dry cough, fatigue, sore throat, and decreased sense of smell and taste, please wear a mask and go to the nearest fever clinic in time, avoid taking public transportation, and tell the living history truthfully.

If it overlaps with the tracking of confirmed cases and close contacts, please report it to your community, unit and hotel as soon as possible.