I started having symptoms on a Wed morning, tested with OTC test, negative. But I had read an account in which that happened, but 2 days later on Friday, I tested positive with a strong line. By Monday, still positive but with a faint line. My symptoms were attenuated significantly. I waited till the next Friday to test, and it was negative. The highly transmissible BA5 can give people small viral loads. The PCR test is so sensitive that it can test positive even a month later after symptoms have gone away and only small pieces of the virus are hanging around. They are now pretty much saying that if symptoms other than cough, go away, one is not transmitting. In the UK, hospitals are only testing people with symptoms who get hospitalized. With BA5, up to 50% of the hospitalized tested positive but were in the hospital for other reasons than C19. Based on what I have read, and I am an American with Quaker roots going back to 1653, the UK is superior in population surveillance of C19 with great knowledge of population antibody and variant levels.
Bookmarks