Immensa Covid test lab concerns ignored by Test and Trace
Concerns raised about dangerous discrepancies at a Covid testing lab which has since been blamed for causing an estimated 23 deaths were ignored by health officials for months.
Documents show Public Health Wales flagged "significant concerns" about results from Immensa, in Wolverhampton, in letters to colleagues in England.
They were told nothing was wrong and testing continued for six months.
Letters were released after a Freedom of Information request by the Times.
The UK Health Security Agency (UKHSA) has said as many as 39,000 positive results were wrongly reported as negative in September and October 2021, mostly originating from south-west England.
Source: BBC News, 26 January 2023