> My daughter is 3 weeks after first symptoms She should be fine, unless immunocompromised. RT-PCR tests do not tell, in absence of symptoms, if you are infec

> My daughter is 3 weeks after first symptoms She should be fine, unless immunocompromised. RT-PCR tests do not tell, in absence of symptoms, if you are infectious. If you have symptoms, the presence of a positive test correlates with actual, infectious virus in your throat until 7 days with milder symptoms and 15 days with more severe symptoms. See https://www.cebm.net/covid-19/infectious-positive-pcr-test-result-covid-19/ https://www.cebm.net/covid-19/infectious-positive-pcr-test-r... Also bear in mind, in particular for your daughter, that viral RNA takes a lot to clear, even when her immune system has already defeated the virus (IOW: you're seeing the "debris after the battle" and not the virus): the milder the symptoms, the longer it takes to clear. tl;dr: Your daughter should be fine at this point, in general terms. Of course, as an obligatory disclaimer, IAAS (I am a scientist), IANAMD, this is not medical advice, etc etc.