Former Emmerdale actress Claire was removed from the compound on Sunday and taken to hospital to receive medical attention for an undisclosed illness.
It has since been revealed that Claire will not be returning to the reality show.
A statement on the Celebrity Big Brother website read on Tuesday night (2 September): "On Sunday, Claire had to leave the Celebrity Big Brother House for medical reasons. Unfortunately, Claire will not be returning to the House.
"Her housemates have been informed of this news. Everyone here at Big Brother wishes Claire all the best, and hopes she gets well soon."
Claire was believed to have been taken ill over the weekend before exiting the house around Sunday lunchtime.
At the time, a spokesperson said: "Due to ill health Claire has had to leave the Big Brother house to receive medical attention."
Claire's exit comes ahead of tonight's live eviction, in which Gary Busey, Stephanie Pratt, Kellie Maloney, Angelique 'Frenchy' Morgan, Ricci Guarnaccio and Lauren Goodger face the public vote.
Celebrity Big Brother continues tonight (Wednesday 3 September) on Channel 5 at 9pm.
CBB housemates - full line-up:
Copyright: Channel 5