Candidates from the National and Labour parties are disavowing comments made in the past on fluoride and vaccines.
National's Hamilton East candidate Ryan Hamilton says he no longer opposes the fluoridation of drinking water, a stance he held at least as late as 2016.
And Labour list candidate Deborah Rhodes says she now believes the Gardasil HPV vaccine is safe and effective, in contrast to views she expressed online in 2019.
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Director and founder Kate Hannah spoke to Ingrid Hipkiss.