Recently, there are many places in the country now distributed epidemic, and the current epidemic prevention and control situation is grim, and in the course of the battle also appeared a very fashionable term called "space-time accompanied by", so this space-time accompanied by what exactly is the meaning of it?

It means that my phone number and the diagnosis of the number in the same space-time grid (range is 800M * 800M)*** with the stay more than 10 minutes, and the last 14 days, either side of the number of the cumulative stay of more than 30 hours or more, to find out the number for the space-time accompanied by the number. My green health code will be changed to a yellow code with a warning, and I will be labeled by the system as a "space-time accompanied" person.

For example, if an infected person has traveled to a certain place within 14 days, and your trajectory in the past 14 days has intersected with his, whether it is physically passing by or drifting in communication signals, you may be identified as a "space-time companion".

Health code yellow code people and receive the Chengdu Municipal Public Security Bureau, the city CDC text message reminders of the risk of space-time accompanied by people should immediately report to the community, and within three days for two nucleic acid test, the two nucleic acid test interval should be more than 24 hours, get a negative result of the nucleic acid, please stay at home, do not go out.

It can be seen that the "spatial and temporal accompaniment" is based on the comprehensive use of big data and various types of information resources, accurate mapping of the trajectory of the activities of confirmed cases, and a comprehensive combing of the trajectory of the people who have overlapped with the confirmed cases of the definition of the risk of investigation.

Taking Chengdu as an example, since the emergence of local cases of new coronary pneumonia, it has been found that 82,000 people are at risk of spatial and temporal accompaniment.

Why did we receive the "Risk Management" report in the first place?

Chengdu outbreak prevention and control of the refinement is, in addition to confirmed cases of residential areas, Jinniu District, Jinjiang District, Chenghua District, the case has been active in the public **** place to carry out strict control and notification. Some citizens at risk of temporal accompaniment have had their Tianfu Health Code turn yellow and have received text message reminders for nucleic acid testing from the Chengdu Public Security Bureau and the city's CDC.

Related departments through big data and other means, accurate mapping of the trajectory of the case activities, continue to carry out close tracking management, and effectively achieve "clear bottom line, the situation is clear," the fastest speed, the highest efficiency to cut off the chain of transmission of the virus. This round of the epidemic, "yellow code" as yellow light, become the city's people self-check and self-check, to protect their own life safety "signal light".