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More Backpeddaling from David Kirby

Posted in Neurologica by Skepdude on June 2, 2009

READ THE REST OF THIS ENTRY AT “NEUROLOGICA”

Maybe David Kirby, author of Evidence of Harm and one of the major proponents of the notion that thimerosal in vaccines was largely responsible for the recent increase in autism diagnoses, is sincere when he claims he is not anti-vaccine. I say that because he has backed so far off from his stance that vaccines are the culprit – not completely, and without overtly acknowledging his past errors, but has put some significant distance between him current position and his prior certainty.

In his 2005 book Kirby asks the question:

Did the injection of organic mercury directly into the developing systems of small children cause irreparable harm? It’s a plausible proposition, and a hugely important question. If the answer is affirmative, someone will have to pay to pick up the pieces.

He coyly insists he was just asking questions, but the book makes a strong and, in my opinion, one sided case that there is “evidence of harm” – specifically evidence that thimerosal was a major contributor to autism. It also builds a case for a grand conspiracy to hide this fact from the public. Kirby then made a career out of promoting the notion of a link between vaccines and autism with government and professional malfeasance. He became a hero of the anti-vaccine movement.

Yet he insisted, implausibly, he was not “anti-vaccine.” As recently as December 2007 Kirby was writing this nonsense in the Huff Po:

But if thimerosal is vindicated, or shown to be a very minor player, then what about other vaccine ingredients? And what about the rather crowded vaccine schedule we now impose upon families of young children? And what about reports of unvaccinated children in Illinois, California and Oregon who appear to have significantly lower rates of autism? Shouldn’t we throw some research dollars into studying them?

By this time the handwriting was on the wall – thimerosal in vaccines is not linked to autism.  After moving the goalpost several times on the evidence, it could be moved no longer. The removal of thimerosal from the routine vaccine schedule by 2002 was followed by a continued increase in autism disgnoses – without even a blip. The predicted (by Kirby and others) precipitous decrease in autism diagnoses never came.

Kirby and the anti-vaccine crowd moved quietly over to the other ingredients in vaccines, in what has been called their “toxin gambit.” This move, more than anything else, is what convinced me that this was all really about being anti-vaccine. The MMR vaccine was vindicated. Now thimerosal was vindicated. So there must be something else in those vaccines that’s the problem – even though there is no evidence to link vaccines at all to autism.

Now Kirby has quietly backed off even more. He writes:

I believe that most ASD cases have environmental triggers (probably more than one) that activate certain genetic predispositions (again, probably more than one) and create some of the symptoms that we call “autism.” I also believe that vaccines may have played a role in triggering some – though certainly not all – cases of regressive autism. Even if that number is a small minority, it seems sensible to me to study the mechanism of action, in hopes of finding clues to the development of autism in all those other children.

Kirby is slowing moving over to the position of the scientific community he has so long criticized for not listening to parents and being blind to the true causes of autism.  He’s not quite there yet, but now it is mostly a matter of emphasis. His position now seems to be that autism is a complex set of disorders with many genetic and environmental contributions. Congratulations – that is what scientists have been saying for years.

READ THE REST OF THIS ENTRY AT “NEUROLOGICA”

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