Is it time and space communication to go to the same supermarket with a positive person 1 hour apart?

It is not time and space communication.

If the supermarket environment is relatively empty and there are few people, and you keep a distance of more than 1 meter or 1.5 from a confirmed case, and there is no close contact, then the probability of being infected by the virus is very small, disease control experts It is possible to exclude close contact; if you are in a confined space and are particularly close to a confirmed patient, disease control experts will include you as a close contact; if a person has poor ventilation and a particularly narrow space In a supermarket or pharmacy environment, disease control experts may include all people present as close contacts. If someone like you doesn't meet a positive person at the same time, it doesn't count as time and space communication.