Organised by the Australian Vaccination-risks Network (AVN), the film, called 'The Science', features Robert F. Kennedy Jr., the son of the late US senator Robert F. Kennedy, speaking about the "many problems with the development and safety of [pharmaceutical company] Merck's third-highest grossing product, Gardasil".

Gardasil is a vaccine that protects young women from the human papillomavirus (HPV) that causes 70 per cent of cervical cancers.

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While the organisation denies that the film is "anti-vaccination", saying it seeks to "add to the science" around Gardasil, Opposition Leader Rebecca White said "anyone pushing an anti-vax message is completely irresponsible".

"We know that we need to ... protect people from diseases, particularly young children, who are sometimes too young to be vaccinated," she said.

"The evidence is clear - vaccinations work.

"The public can demonstrate their contempt for this kind of anti-vax behaviour by demonstrating how irresponsible it is and not turning up [to the event]."

Tickets to the screening start at $16.43.

The event begins at 6.30pm this evening, with the film to screen from 7pm, but the AVN said the location would only be revealed to ticket-holders two hours before the screening "due to the well-orchestrated threats of violence and abuse that come from the pro-censorship community".

The screening comes on the same day the state government rolled out the next phase of its pharmacy vaccination program, which allows certain pharmacists to administer diphtheria, tetanus and whooping cough vaccines to Tasmanians who are aged 16 and above.