A tech error led to some 11,000 positive coronavirus test results being absent from official figures in Wales, health authorities said on Wednesday.
The 11,000 extra positive tests were taken between 9 and 15 December. They will be added to Public Health Wales’ (PHW) tally on Thursday, which means the week’s case numbers could be nearly twice as high as previously thought.
Currently, recorded figures for that week stand at 11,911.
PHW said that that due to “planned maintenance” of some IT systems there was a “significant under-reporting” of positive tests.
On Wednesday, 530 more coronavirus cases were announced in Wales while 30 more people had died.
A total of 103,098 people have tested positive since the pandemic began and 2,921 have died.