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As lockdowns begin to lift the government is relying on testing and contact tracing programmes to prevent a second wave of Covid-19 infections. But how accurate are the swab tests used to diagnose the disease?
By BBC Radio 44.7
772772 ratings
As lockdowns begin to lift the government is relying on testing and contact tracing programmes to prevent a second wave of Covid-19 infections. But how accurate are the swab tests used to diagnose the disease?

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