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This paragraph stands out in particular.
But data suggests that the test performs worse in the real world. Liverpool was the first city to pilot the test for mass testing of people without symptoms – about 125,000 residents took the tests between 6 November and 9 December. Of those, 897 people who did not know they had the virus tested positive. However, tests in the field missed 60% of infections in people who were self-swabbing.
A reminder that the FDA in USA said this of the Innova LFT as used in the UK
https://www.theguardian.com/world/2021/jun/11/us-health-agency-gives-innova-lateral-flow-covid-tests-scathing-review
"In a scathing review, the US health agency suggested the performance of the test had not been established, presenting a risk to health, and that the tests should be thrown in the bin or returned to the California-based manufacturer Innova."