A deadly blunder at a laboratory which saw thousands of people told they were negative from covid, when they were actually positive, may have killed 20 people.
The error at the Wolverhampton lab meant that around 39,000 PCR tests were reported as negative when they should have been positive between September 2 and October 12, 2021.
As a result, many people – mostly in the south-west of England - would have continued with their daily lives and not self-isolated even though they had Covid-19.
