PHILADELPHIA (CBS) -- A report that the first study linking vaccines to autism was a fraud is not swaying advocates on either side of the vaccine debate.

Word that the study that first linked vaccines to autism was fraudulent (see related story) isn't changing the mind of Honey Rinicella of West Chester, Pa.  She's a co-coordinator of the local chapter of the organization Talk About Curing Autism.   She believes vaccines caused autism in her ten-year-old twins.

"Parents are not being heard," she told KYW Newsradio on Thursday.  "I speak for hundreds of parents when I say that we're frustrated because we knew our kids were okay.  We took them to the doctor, and they came home and they weren't anymore."

But Dr. Paul Offit, director of the vaccine education center at Children's Hospital, says he has no doubt that some children have died because their parents refused to get them vaccinated.

"This notion has really taken the autism world hostage, and unfairly.  It's certainly unfair to the children with autism," he said.

Rinicella she says even if Andrew Wakefield's study is fraudulent, that doesn't change the evidence she sees every day.

"We're going to stick to our guns," she said.  "Because nobody's going to tell me what I witnessed with my children didn't happen.  I witnessed it happening to my children, as did hundreds of thousands of other parents like myself.  So to say that this has been proven that he's a fraud is not going to take away that firm belief from one man's study."

Rinicella says researchers should look more at the interaction among vaccines.

Reported by Mike DeNardo, KYW Newsradio 1060.