What is a time companion? What should a space-time partner do?

Recently, there have been many epidemics in China, but the current situation of epidemic prevention and control is grim, and a very fashionable term called "time-space companion" appeared in the process of sports. So what does this time-space companion mean?

What is a time companion? It means that my phone number and confirmation number stay in the same space-time grid (the range is 800 m * 800 m) * * for more than 14 minutes, and the cumulative stay time of any number in recent 14 days exceeds 30 hours, and the found number is a space-time companion number. My green health code will turn into a yellow code with warning nature, and will be marked as "time companion" by the system.

For example, the infected person has been to a certain place within 14 days, and the trajectory of you 14 days intersects with him. Whether it is a physical passing or a drift in communication signals, it may be considered as a "time companion."

What should the "time companion" do? Persons with yellow health code and persons at risk associated with time and space who have received SMS reminders from Chengdu Public Security Bureau and Municipal Center for Disease Control and Prevention should immediately report to the community, and conduct two nucleic acid tests within 3 days, with the interval between the two nucleic acid tests being more than 24 hours. Please stay at home and don't go out until you get a negative result of nucleic acid.

It can be seen that "time-space accompaniment" is a risk definition based on the comprehensive utilization of big data and various information resources, which accurately arranges the trajectory of confirmed cases and comprehensively combs the people who overlap with confirmed cases.

Taking Chengdu as an example, it was found that 82,000 people were at risk in time and space after the emergence of local cases in COVID-19.

Why do you receive a "short message" prompt? The refinement of epidemic prevention and control in Chengdu lies in that besides the residential areas where the confirmed cases live, jinniu district, Jinjiang District and chenghua district have also strictly controlled and notified the public places where the cases have been active. Some citizens who have the risk of time-space correlation have yellow Tianfu health code and received SMS reminders from Chengdu Public Security Bureau and Municipal Center for Disease Control and Prevention for nucleic acid detection.

Relevant departments accurately trace the trajectory of case activities through big data and other means, continue to carry out strict tracking management, and earnestly achieve "clear base and clear situation" to cut off the virus transmission chain with the fastest speed and highest efficiency. In this round of epidemic, the "yellow code" is like a yellow light, which has become a "signal light" for the people of the city to check and correct themselves and ensure their own life safety.