The Breast Cancer Foundation says potentially hundreds of women have no idea they have breast cancer because no screening was done under the level 4 lockdown.
The Epidemic Response Committee was yesterday told people will die unless the health system catches up with the backlog of cancer screening.
Adele Gautier from the foundation told Morning Report that Breast Screen Aoteroa screens 22,500 per month. Of those, 130 turn out to have breast cancer.
"We know that for over the six weeks or so screening has been shut, that 200 women will have no idea they have breast cancer and have missed out on a mammogram that would have found it."