Contact tracing won't curb COVID if testing is too slow, says Lancet

Contact tracing won't curb COVID if testing is too slow, says Lancet

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The speed of contact tracing strategies is essential to reduce Coronavirus transmission, but the delays in COVID-19 testing will significantly hamper this process, warn researchers.

If COVID-19 testing is delayed by three days or more after a person develops symptoms, even the most efficient contact tracing strategy cannot...

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