Another 1,500 women who've developed cancer may have to have their smear tests audited.

Health Minister Simon Harris told the Dáil the number of women who've developed cancer and haven't had their smear tests rechecked may be double the amount originally thought.

Many were cases of people who weren't examined by CervicalCheck, which was why they were not included in the initial figures.

Minister Harris says they're still trying to establish the number of women affected: