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ANALYSIS: Coronavirus: Tests 'could be picking up dead virus'

The main test used to diagnose coronavirus is so sensitive it could be picking up fragments of dead virus from old infections, scientists say.

Most people are infectious only for about a week, but could test positive weeks afterwards.

Researchers say this could be leading to an over-estimate of the current scale of the pandemic.

But some experts say it is uncertain how a reliable test can be produced that doesn't risk missing cases.

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Symptoms can last much longer than expected--CDC study

(CNN) The US Centers for Disease Control and Prevention has said most people who tested positive for Covid-19 can return to work or school 10 days after the onset of symptoms, unless the illness requires hospitalization.
 
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