by Grania Spingies
There are a whole lot of reasons why people deny truths, and most of them don’t do it out of malice or contempt for humanity. In many cases they truly believe that they are doing the right thing. It is fairly self-evident that many of the anti-vaccine brigade do this because they truly believe they are saving their children from the harm of a callous conspiracy between the CDC, Big Pharma and your local GP. Ignorance may not be an excuse, but it is their reason.
It is pretty hard to win over hearts and minds on these issues, but the best that the pro science-based medicine side can do is to keep on refuting the worst myths and distortions.
But it really doesn’t help when someone with a disproportionate ratio of influence to actual facts gets up on their high horse and spouts forth.

In text form:
California Gov says yes to poisoning more children with mercury and aluminum in manditory vaccines. This corporate fascist must be stopped. They say mercury in fish is dangerous but forcing all of our children to be injected with mercury in thimerosol is no risk. Make sense? I am not anti-vaccine. I am anti-thimerosal, anti-mercury. They have taken some of the mercury laden thimerosal out of vaccines. NOT ALL! The CDC can’t solve a problem they helped start. It’s too risky to admit they have been wrong about mercury/thimerasol. They are corrupt.
Oy.

His swipe at the CDC was no doubt in response to people informing him that thimerosal is no longer used in most vaccines any more, and especially not children’s vaccines even though studies have shown to have no evidence of harm at the dosage that was typically used.
The CDC addresses this issue fairly clearly here, and has several papers on the subject available to download and read here. True Believers™ don’t read papers, of course, because they are all a part of the corrupt fascist conspiracy. But people who are genuinely undecided might. This is what the CDC actually says on the subject.
Thimerosal is a mercury-containing preservative used in some vaccines and other products since the 1930’s. There is no convincing evidence of harm caused by the low doses of thimerosal in vaccines, except for minor reactions like redness and swelling at the injection site. However, in July 1999, the Public Health Service agencies, the American Academy of Pediatrics, and vaccine manufacturers agreed that thimerosal should be reduced or eliminated in vaccines as a precautionary measure.
Since 2001, with the exception of some influenza (flu) vaccines, thimerosal is not used as a preservative in routinely recommended childhood vaccines.
The line of “I am not anti-vaccine, only anti-poison” is a favorite refrain amongst the anti-vax advocates in recent years, but Dave Gorski over at Science Based Medicine has taken this claim apart with his usual attention to minute detail. The dangers of failing to vaccinate children is also comprehensively covered here: https://www.sciencebasedmedicine.org/category/vaccines/.
If you see the Carrey rant circulating on your social media platform of choice, maybe help out by adding a useful link to an evidence-based source.