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The LFT and PCR tests are different tests for different things. Neither is perfect, but essentially the LFT test highlights when people are infectious, and the PCR test detects presence of the virus (Even long after it is still active).
I've posted this Tom Chivers Article before, but it's well worth reading if you haven't seen it.
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In a survey sample of one school, that did not follow the unison guidelines for teacher distancing and didn't follow guidelines for bubble closure when teachers tested positive. Teachers will have to do the lateral flow test twice a week. But if they have tested positive for covid in the last 90 days, then no test is needed for the next 90 days.
Any other teachers confirm that there school are doing the same? As this is the source of my covid infection rather not risk.
Children will have to do their own tests, the same kids that can't staple stuff to a page will do the test. The greater concern is not the tests accuracy but the people ability to swab themselves correctly.
From next week parents with kids at school can access lateral flow testing for asymptomatic COVID twice a week. Mine are in primary so relatively low risk, but I guess from a public good perspective I should probably be doing this? Or is the sensitivity of LFT low enough that it's just health theatre?