A group of parents concerned about studies on vaccines encourage viewing a film next weekend in Billings.
"Vaxxed: From Cover-up to Catastrophe" will be shown on Sunday.
The group said the film focuses on a Centers for Disease Control study that showed a link between the Measles, Mumps and Rubella (MMR) vaccine and autism.
The parents said Dr. William Thompson and 13 others from the CDC came out and said the agency ignored the report.
The CDC website does not mention a connection between the vaccine and autism and states that severe problems are very rare.
One of the parents, who is also a nurse, said the group wants an investigation.
"First and foremost, I want to say this is not an anti-vaccine movie,” said Lori Gilbert Lee.
“It is far from it. It is more a documentary on the CDC and some fraudulent things that had gone on. They found that if the MMR is given after three years of age, the autism rate went way down. Why did they not recommend that we change the schedule?" she said.
"Vaxxed: from Cover-up to Catastrophe" will be shown next Sunday, July 9 starting at 6:30 p.m. at the Red Lion Hotel and Convention Center.