This title is really clickbait for “All you need to know about COVID false positives,” which is possibly the biggest un-publicised problem of this whole pandemic. I’m writing about the UK, but much the same applies across the world. 1 Mass COVID testing – the test used What is currently driving UK public policy is the recent large increase in “positive COVID tests.” They occur in an increasingly stressed “test, track and trace” service whose escalating capacity has been outpaced by escalating demand. The tests involved are almost entirely “PCR” tests, which repeatly amplify RNA fragments from COVID-19 until they are detectable. Potentially, enough amplification cycles can detect even a … Continue reading All you need to know about COVID testing