Coronavirus tests given to thousands of NHS staff so they could return to work have been found to be flawed and should no longer be relied on, a leaked document reveals.
The memo from Public Health England (PHE), sent earlier this month, warns of "degraded" performance, meaning the results are less reliable than first thought.
Almost 100,000 NHS and social care workers and their relatives have now undergone tests in an effort to get as many staff back to the frontline as possible.
But the memo, dated April 11, reveals that "discordant results" have been identified in the tests, run by PHE and NHS laboratories, requiring ambiguous samples to be re-checked.
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Source: The Telegraph, 22 April 2020