Some of the things that have happened here are atrocious. It a while back now, but involuntary enrolment in a cervical cancer study occurred, where some patients were left to develop cancers to see if invasive cancer did actually occur.

More relevant though, and ongoing are the regular stories and findings that New Zealand is doing poorly with Maori health, with cancers found later and worse outcomes when treated. This persists after 20+ years of effort that was supposed to address it. It’s really bad as the differences in outcome are huge.

https://en.m.wikipedia.org/wiki/Cartwright_Inquiry

https://www.health.govt.nz/our-work/populations/maori-health...

https://img.scoop.co.nz/media/pdfs/1907/Hauora_PrePubW.pdf