Why is there no SMS notification when nucleic acids are mixed?

The police station will inform you if one of the ten mixed samples is positive. Just wait for the information at home. In the population with positive "10 1" nucleic acid test, if the person is confirmed to be negative through a single examination, it should be judged whether he belongs to a close contact in time, generally within 24 hours, and if he is not a close contact, the isolation should be lifted immediately.