A guy I work with was told to pick his kids up as the school was closing. Although there was no requirement for him and his family, other than the child, to get tested, the school told them they all needed to be tested.
So, he left work, packed the family into the car and all went off to go and get tested. 3 of the 4 returned negative results, the wife, vaccinated, returned a positive. As they all live together, they are all required to isolate for 14 days.
I suggested that he should get tested every day or two, because, it would be pretty annoying doing 13 days of isolation, and then doing the day 13 test only to receive a positive result, so the clock starts again. At least if you test positive on day 3 or 5, that's when the timer starts.
Anyway, as of yesterday, probably day 10, numerous tests conducted, he, vaccinated, and the children, unable to be vaccinated, have returned negative results. The wife has had zero symptoms, and has not been allowed to be retested to check if it was a false positive.