More reassurance for parents on vaccines and autism

The Pediatric Insider

© 2013 Roy Benaroch, MD

First, it was the MMR-autism link—that turned out to be a complete fabrication, a fraud invented by a single “researcher” who made up his data. He was taking money from plaintiff’s lawyers, and he was trying to patent his own, competing vaccine. Too bad for the scare and the resulting surge in measles.

Then, the mercury connection. A mercury-containing preservative, thimerosal, came under scrutiny. To be safe, it was removed from almost all vaccines in 1999—and rates of autism didn’t fall one bit.

The most recent vaccine-autism link can be abbreviated as the “too many too soon” hypothesis, that somehow the antigens in vaccines “overwhelm” the immune system, leading to mischief. It doesn’t matter that the quantity of antigens from the current generation of vaccines is far fewer than what was used in the past. Those needles have got to be doing some harm, right?

The “too many too soon” idea never made any sense, from a logical or scientific standpoint—it’s well deconstructed here. The “load” on the immune system from ordinary life, from the exposures we all have from living in a world full of bacteria and germs, is hugely greater than the comparatively tiny exposures from vaccines. But the true, hardcore anti-vaccine propagandists have found their latest idea, and as usual they don’t need no stinkin’ evidence.

Still, there is evidence. For the many families who have sincere questions about vaccine safety, it’s good to have yet another study to add the mountain of evidence that vaccines are safe, and that vaccines do not cause autism.

Published in The Journal of Pediatrics this month, this study compared children with autism (including several subtypes) to typically developing children. They combed records to determine just how many vaccines and how many vaccine components were given, to see if they could find a link. Could increasing vaccine exposures increase children’s risk of autism?

No. Increasing exposures to the antibody-stimulating products in vaccines during the first two years of life did not increase the risk of developing any autism spectrum disorder.

At this point, the evidence for the lack of any vaccineautism link is overwhelming. Continued vaccine study for any sorts of side effects needs to continue, but the singular focus on vaccines as the cause of autism as voiced by some in the autism community has become a hindrance to genuine progress and a public health nightmare. Let’s keep our kids healthy. Make sure your kids are fully vaccinated, on time and by the established schedule. It’s time to put this vaccine-autism thing behind us, so we can speed up the progress towards better understanding, prevention, and treatment. I’d hope that’s something we could all agree on.

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2 Comments on “More reassurance for parents on vaccines and autism”

  1. Kylie Says:

    Thank you so much for this! I can let a lot of ignorant lifestyle choices go, but as a parent, I get so angry when others put my child at risk by refusing vaccinations for their own. I’m glad to hear a professional voice of reason.


  2. lilady Says:

    Unfortunately, the most notorious of the anti-vaccine, anti-science organizations/blogs, has *jumped on* this latest study…not with any analyses…just to call for, again, a prospective vaccinated-vs-unvaccinated study.

    Fortunately, all the science bloggers have posted about this case control study. 🙂

    The CDC has many mechanisms in place to continuously monitor the safety of every vaccine on the Childhood Recommended Schedule:


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