Vaxxed versus unvaxxed children: What a real study shows

The Pediatric Insider

© 2017 Roy Benaroch, MD

You may have seen it on Facebook: A published study claiming to be “The First Ever” comparing vaccinated and unvaccinated children supposedly showed that vaccinated children are more likely to have a number of health problems. Let me promise you: there’s nothing to worry about here. The study is one of those garbage-in-garbage-out whackjobs that’s almost indescribably bad and unreliable. And: a much better study of the same thing – children who are vaccinated, versus children who are not vaccinated – shows that there are not any worrisome risks. The long-term health of vaccinated children is just fine, and even better than unvaccinated kids (because they don’t have to suffer through vaccine-preventable diseases.)

Let’s cover the good study, first. It was published in 2011, and tracked over 13,000 randomly selected children in Germany, tracking their health status and correlating that with their documented vaccine histories. The authors could find no examples of any increased risks of infectious or allergic diseases in the vaccinated children.

And now, this more-recent, execrable study. They didn’t use randomly selected children. What it actually compared were the 666 children of homeschoolers who chose to complete the survey (which was promoted on antivaccine websites), using their self-reports of vaccine histories and health status. Of these, 40% hadn’t been vaccinated, at least according to the surveys. No attempt was made to track who received the survey, what percentage of respondents completed it, and what kind of respondents completed it. Do you think it’s possible that a high proportion of vaccine-distrusting parents would complete a survey like this? Hint: if you did a survey of musical tastes at a Justin Bieber concert, you’re not going to find many Cab Calloway fans.

The “study” was really just a survey, and a biased one at that – a survey among people who were guaranteed to say exactly what the study authors wanted them to say. It had already been retracted, once previously (and, laughably, by a bottom-feeding journal that looks like it requires authors to pay to publish their studies. This isn’t the way legit journals work.)

Vaccines are safe, and they save lives. Make sure your kids are fully vaccinated. Don’t believe the Facebook rumors, or idiocy dressed up like science – what the real science shows is what parents should feel confident about. There’s no need to worry about vaccines.

A more detailed evaluation of this fakakta survey is here, and here’s more information about reliable vaxxed versus unvaxxed studies. Yes, they’ve been done before. Yes, they consistently show that vaccines are safe and that vaccinated children are healthy.

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