What is the space-time attendant in COVID-19? Do you need centralized isolation? Is the risk of infection high?

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.

It can only be said that any contact has the risk of infection, but this probability is not great.

How to turn the yellow code of time and space partner into the green code?

The reporter was informed that the transcoding conditions are: two nucleic acid tests within three days, that is, after the yellow code is turned, there are more than two negative reports of nucleic acid tests every 24 hours in the first three days, and the green code can be automatically turned.

Other analysis:

In order to comprehensively and quickly find people related to the epidemic situation and cut off the transmission route of the epidemic situation, the provincial epidemic prevention and control headquarters has added the rule of "time and space accompanying" to the assignment standard of health codes, that is, people coming to China from medium and high-risk areas at home and abroad.

Or people who have crossed the travel track with COVID-19-infected people in the same time period, the health code will be changed to yellow code or red team according to different exposure risks. According to the epidemic prevention policy, "yellow code" indicates the need for home isolation, and "red team" indicates the need for centralized isolation.