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Cities and Autism! Diagnostic Rates are not Incidence Rates

Over at  Just a 'Lil Blog  (a blog I recommend reading) there is the following: Interview with a Unicorn How did we come to be in front of the camera? Well, it started with the University of Pittsburgh. See, they're doing a study on the effects of environment on the prevalence or symptoms of autism in the surrounding area. Apparently Pittsburgh is quite a little hotspot for it, and so this study is geared toward…well…something about the environment...in their words, "The Research Study of Environmental Risk Factors for Childhood Autism is a multi-year study which began in 2010. It is being conducted in southwestern Pennsylvania (Allegheny, Armstrong, Beaver, Butler, Washington and Westmoreland Counties) by the University of Pittsburgh's Graduate School of Public Health. The aim of the study is to help identify environmental and other factors that may put children at risk for developing conditions within the ASDs." — from http://blogginglily.blogspot.com/20...

The Amish Question, Again

I encountered the question of the Amish and autism again today. Yes, the Amish do have autism in their communities and yes they do vaccinate, but at lower rates than most groups. The Amish do vaccinate. The old Amish communities have a lower rate than other communities, but the rates are steady in most communities. There are, however, almost a dozen "Amish" types, from those speaking a form of German to those that trade with "English" neighbors and are active in local counties while still living within their own village. About 70% of the Amish in Lancaster County do, indeed, vaccinate.  Immunization can be especially low among conservative groups, with only 6% of Swartentruber Amish participating, compared to 63% of the overall Amish population and 85% of the non-Amish population, according to a 1984 study (Paradox, Hurst/McConnell). http://www.medpagetoday.com/Neurology/Seizures/2954 http://autism.about.com/b/2008/04/23/do-the-amish-vaccinate-indeed-they-do-a...

Autism, Amish, and Outbreaks

Apparently, contrary to urban legends, the unvaccinated Amish do get seizure disorders and autism: http://www.medpagetoday.com/Neurology/Autism/tb/2954 Of course, why trust the New England Journal of Medicine when there are so many "experts" pushing their theories on the Web? I am now accustomed to the anti-vaccination crowd claiming that any research that points to a genetic cause, with minimal environmental triggers, is research bought and paid for by "Big Pharma" or some other conspiracy is at work. It is ironic that the stories of autism-free Amish appear on thousands of Web sites, while serious research is largely ignored. People want easy answers. Triggers are not causes. Are there triggers for underlying conditions? Probably. But I wonder if we are asking for trouble as more and more parents avoid vaccines? Hence, recent stories in the New York Times about measles outbreaks. According to the Times, several outbreaks of nearly-eradicated diseases have recent...