A claim the health system needs to do more to help Maori parents get their children vaccinated.
In Counties Manukau, on-time immunisation coverage for Maori eight-month-olds fell from 85-percent last May to 68-percent this year.
A report found racism and cultural incompetence in the health system were barriers to immunisation.
National Hauora Coalition Clinical Director Rawiri Jansen believes told Mike Yardley this morning, Plunket should also take some blame.
"The organisation was started by white supremacists, and we've got evidence that it still does this differential of its clients so that's problematic."
Plunket Chief Executive Amanda Malu says Plunket totally rejects Mr Jansen’s assessment.
“He's describing our founder, Truby King, and we're very clear in our own communication that we do not subscribe to his views around white supremacy and eugenics at all.”