Calling red team is also an intersection of time and space. Will the code change?

Spatio-temporal companion refers to the person who stays with the diagnosed patient 14 days * * * stay 10 minute in the same spatio-temporal grid (usually 800 meters *800 meters as the detection range). In layman's terms, for example, the confirmed patient has been to Fuzhou within 14 days, and the trajectory of someone 14 days intersects with him. Whether it is a physical brush or a drift in communication signals, it may be considered as a problem of time and space. After the system detects that this person is a spatio-temporal companion of the confirmed patient and belongs to the spatio-temporal companion in the risk group, the health code will turn yellow.

The sudden change of health code to red proves that people who have been to high-risk areas or tested positive for nucleic acid during the epidemic period, or who have crossed the travel track with infected people in the same time period, their health code will automatically change. When the health code turns red, don't panic first, take protective measures for individuals and family members, and then report to the community workers at the first time. We still need to know several possibilities that the health code will turn red, because once it is determined that it belongs to a high-risk group, it needs to be observed in isolation, and for the personal safety of ourselves and everyone, it needs to be reported in time: the health code is mainly judged according to the personal travel trajectory, and the mobile phone turns on roaming mode to obtain the middle and high-risk areas that have arrived, and finally the red code is determined. During the epidemic period, people who have been to the same place or shared a car with a confirmed patient will become red team. When an individual enters a high or medium risk area, as long as you stay 1 hour, the mobile phone will automatically identify the location and convert it into red team.