The aphorism"perfect is the enemy of good enough" has been played out to tragic effect in the US's inadequate testing for the coronavirus, according to researchers calling for quick tests that cost only about a dollar each, and which may not be as accurate but can be carried out several times a week by the whole population.
He has called for the Food and Drug Administration to authorize the sale of rapid tests which can be done out at home using a strip of paper that changes color in a quarter of an hour to give a result, similar to a pregnancy test. The quick tests tend to be good at detecting people who emit a large amount of virus, which is when they are more contagious, right at the beginning, while the PCR tests are very sensitive and can detect even small concentrations of the virus, when people are no longer as contagious.
Even if rapid tests miss half the cases, it is likely that with two tests a week, they will end up detecting them.
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