Interesting piece in the NYT about autism and it's possible connection to childhood vaccinations. I can understand how those parents affected by autism would be reluctant to vaccinate their children. I've heard the case made that the thimerosal used as a preservative in vaccines contains mercury, which has been posited as a cause of autism and related disorders. But although the thought of taking the slightest chance of putting my children at risk for autism makes me very nervous, I can't see myself taking the not-so-slight risk of not immunizing my children. Too many ER episodes of children dying from measles, I guess. Maybe if the data would show more conclusively that the preservative is a cause for autism, like autism rates in England (where thimerosal has been banned) going down significantly, I might feel otherwise. Right now it just seems to be based on speculation. Your thoughts?