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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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Covid-19 Live Updates: At-Home Virus Tests Remain ‘Aspirational’

As hope builds over possible frequent at-home testing, experts call the idea a long shot.

Over the past few weeks, a Harvard scientist has made headlines for a bold idea to curb the spread of the coronavirus: rolling out antigen tests, a decades-old underdog in testing technology, to tens of millions of Americans for near-daily, at-home use.

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Medical Espionage: Race for Coronavirus Vaccine Pits Spy Against Spy

WASHINGTON — Chinese intelligence hackers were intent on stealing coronavirus vaccine data, so they looked for what they believed would be an easy target. Instead of simply going after pharmaceutical companies, they conducted digital reconnaissance on the University of North Carolina and other schools doing cutting-edge research.

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