According to a report by China Business Network on October 22, 2021:
As early as 0:00 to 24:00 on October 21, Xi'an added 3 new local confirmed cases (ordinary type), which were infected in addition to the members of the Shanghai tour group, which meant that the already tense prevention and control situation in Xi'an was even more severe.
The report on the same day mentioned that the local confirmed case Shang xxx and her husband Li xxx took the D2746 train on October 15 (the intersection with the confirmed case 95 released by Gansu on October 19) to Lanzhou to play.
In the report of the same day, it was also explained that the so-called intersection of time and space should be a technical term used by the public security and telecommunications departments to describe the concept of time and space intersection in the tracking of the epidemic.
Through the intersection of time and space, potential risk groups can be found to the greatest extent possible, and more people who may have the opportunity to be infected because of the intersection of time and space can be included in the circulation monitoring, which plays an important role in the timely detection of positive cases, of course, it also means that the workload of circulation is multiplied.
Another term corresponding to the intersection of space-time is called space-time accompaniment, which is a set of corresponding terms under the same concept, space-time accompaniment refers to a 14-day stay in the same time and space grid with the confirmed patient (usually 800 meters * 800 meters as the detection range), and stay together for 10 minutes. In layman's terms, for example, the confirmed patient has been to Xi'an within 14 days, and your trajectory in the past 14 days has intersected with him, whether it is physical passing by or drifting on communication signals, it may be identified as a space-time accompaniment. If the system detects that you have had a spatio-temporal accompaniment with the confirmed patient, and belongs to the spatio-temporal companion in the risk population, the health code will become a yellow code. In the report, it is also mentioned how the yellow code of the space-time companion is turned to the green code: as long as the nucleic acid test is carried out as required, the health code returns to normal after the result is negative.
Due to the concept of the intersection of time and space in the prevention and control of the new crown epidemic in Xi'an, some citizens have also included risk management although there has been no direct close contact with confirmed cases or close contacts. On October 22, someone received a text message from the Xi'an Epidemic Prevention and Control Headquarters. The content of the text message is as follows: [Xi'an Epidemic Prevention and Control Command] Warm tips: Hello, in the new crown pneumonia epidemic transmission investigation, it was found that you were in a risk place, please take the initiative to do safety protection, and immediately go to the nearest nucleic acid testing point for nucleic acid testing. Thank you for your understanding and support!
It is understood that for this part of the population, it is necessary to conduct nucleic acid testing in time, and after the nucleic acid test is normal, the health code will return to green, and everyone does not have to worry.
Now, although the epidemic situation in Xi'an is still very severe, there are many people like us in various social affairs and epidemic prevention and control guarantees, medical rescue and other fields, who are engaged in special work every day, and may be exposed to the source of infection and the carriers of the new crown virus every day, but because of our special work, if we and all the people who are still insisting on working during the epidemic prevention and control period are withdrawn, then the future epidemic will only become more and more rampant. Therefore, every one of us involved in the prevention and control of the epidemic is the guardian of the health of the family and society, each of us is also a hero of this era, if we have an accident because of participating in the epidemic prevention and control, a few years later, when others mention the new crown epidemic in Xi'an in 2021, they will think of our efforts today, if we spend this special day safely, our own efforts during this time will also become a lifetime of indelible memories, and even a few years later we are old, You can also tell your children about your current experience, and even tell your own children's children.
At present, the epidemic situation is still very severe, and our working environment is still very unsafe, so each of us must study harder and practice the safety guidelines for epidemic prevention and control with reference to the professional level of medical care, familiarize ourselves with the "Law on the Prevention and Control of Infectious Diseases", strengthen the awareness of self-protection, and strive to make greater contributions to society on the basis of self-protection!
I am a volunteer who has participated in many large-scale earthquake and flood resistance in the past ten years since the start of the Wenchuan earthquake in China in 2088, and I will try my best to do something for the anti-epidemic work, at this moment, no matter where you are, as long as you want to contribute to the epidemic prevention and control work, we are very welcome!
Specifically how to do it with me, you can send me a private message and leave a message.