Speed versus accuracy. It’s a trade-off in so many areas of human endeavour, and increasingly it is becoming a crucial factor in efforts to test and trace coronavirus.
The UK has gone for accuracy – tests in which swab-samples are sent to laboratories for molecular testing, giving a highly accurate result which can also tell doctors how much of the virus is in a patient’s system.
The Italians have gone a different route, using a test originally developed in South Korea that delivers results in less than 30 minutes.
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