An immunisation expert has dismissed the claims in an anti-vaccination film being rolled out around the country as being "no more than myth".

The film is the work of disgraced former British doctor Andrew Wakefield, whose 1998 research paper argued the MMR vaccine could be linked to autism and bowel disorders.

He was de-registered in 2010 when a medical tribunal found the entire paper fraudulent.

Dr Nikki Turner, head of our Immunisation Advisory Centre, insists there is no association between autism and the MMR vaccine, and the science is clear.

"This is an issue that a couple of people in the world have been peddling since nineteen-ninety-eight, making an industry out of it," she said. "They are making an industry out of preying on people's fears."

"As people forget what measles is, as they do not see the consequences of the disease, they get more focussed on other issues and create myths."

Dr Turner said people are welcome to see any film they like, but reaffirmed that there was no science behind Wakefield's.

LISTEN TO DR TURNER'S INTERVIEW WITH MIKE HOSKING ABOVE

Chief Censor Andrew Jack said his office can't classify the picture because it's a documentary that doesn't have any sex, horror, crime, cruelty, or violence.

Jack says if people are concerned they can push for legislation to be amended, to widen the basis on which movies can be restricted, but "Kiwis are a bunch that love their right to freedom of expression quite a bit and I think any further intrusion into their right to freedom of expression would probably be something people would want to have a really hard think about."