What do you mean by people accompanying the epidemic in time and space?

COVID-19 space-time companion refers to the telephone number associated with COVID-19 patients within the same range of 800 meters by 800 meters, * * stays for more than 10 minutes, and any number stays for more than 30 hours within 14 days. The verified telephone number belongs to COVID-19 time companion.

Therefore, after the health code was changed to orange code, the first nucleic acid test was negative, and the second nucleic acid test turned green after 7 days.

Time and space intersection of epidemic situation

During the period of epidemic prevention in COVID-19, the time-space intersection of epidemic situation put forward by epidemic prevention department attracted many people's attention, and the reason why some people's health codes turned yellow was also caused by the time-space intersection.

Simply put, they were in the same place at the same time during the epidemic. Although we didn't meet directly, we were together.

Relevant persons in the disease control department said that this is a 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.