Though the Republicans are famed for their War on Science, the left has plenty of anti-science anti-evidence faith-based cranks, too. A prime example is some of the anti-vaccine dribble published on the Huffington Post. David Kirby is best known for his thoroughly debunked book Evidence of Harm, and has now written a HuffPo column on the alleged link between autism prevalence and precipitation. Kirby takes the poorly done original study and runs wild, linking mercury and autism and rainfall and coal and vaccines in a positive orgy of denialism.
Respectful Insolence explains better than I can why the original study, published in the Archives of Pediatrics and Adolescent Medicine, fails to establish a link between precipitation and autism. Here’s some select quotes from his excellent analysis:
Note that the authors did not correlate autism prevalence directly with raw mean precipitations but instead used a “relative precipitation variable.” When I see something like that, I know right away that there was no correlation between raw mean precipitation levels and autism…
The authors of the current study, although they tried to correlate for household income, didn’t even attempt to control for urbanicity. That alone makes this study highly suspect, at least to me…
Another problem with this study is that it examines only the Pacific Coast, specifically California, Oregon, and Washington. There is no indication that the observations made in this study are generalizable….
Now, It’s possible there may be a genetic susceptibility to autism that is triggered by an environmental factor or factors, but nothing–I repeat, nothing–in this study supports that hypothesis. Measures of genetic susceptibility were not even a part of the study–or even looked at! To use the words “genetic susceptibility” in the conclusions and to say that this study somehow supports an interaction of genetic susceptibility and environmental factors is just plain incorrect.
So back to the Kirby column. Kirby is an anti-science crank because he refuses to acknowledge the overwhelming evidence that there is NO LINK between vaccines and autism. From Dr. Paul Offit, chief of the division of infectious diseases at the Children’s Hospital of Philadelphia and author of Autism’s False Prophets:
In response to the concern that vaccines caused autism, the public health and academic communities responded, performing a series of large, carefully controlled, epidemiological studies. Ten separate groups of investigators found no link between MMR and autism and six groups found no link between thimerosal and autism. Because of the strength, consistency, and reproducibility of these studies, the notion that MMR or thimerosal cause autism is no longer a scientific controversy.
Kirby is an utterly unreliable source – note that he’s still plugging the vaccine-autism connection in this column. Unfortunately, he’s not alone. There are rumors that Obama is considering making Robert F. Kennedy, Jr. the head of the EPA – and RFK is an anti-vaccine crank as well. If Obama truly values science – and I believe that he does – than I hope that he will appoint people who can make scientific decisions based on the evidence. Because fear-mongering and denialism sure don’t sound like change.
Thanks to Martini-Corona, who requested that I unleash the Oyster Hounds upon this Kirby column. Now released, the Oyster Hounds are frolicking in the rain and gnawing on David Kirby’s femur.