The Bottom Line
Only epidemiological studies are used to dismiss the autism–vaccine connection, and these are not without their flaws. The cited studies using primates and actual mercury dosing reveal real concerns regarding the impact of mercury on the brain. ?
Moreover, a causal relationship between autism and vaccinations can neither be proved nor rejected based on evidence from population-based epidemiological studies - period. Epidemiological studies, by definition, are not designed to prove causality; they can provide only statistical associations. In addition, the IOM admitted that population-based studies would not be able to detect subpopulations that could be genetically more vulnerable to mercury at lower doses. The majority of children without the genetic susceptibility would simply “dilute out” the minority of susceptible children.
All of this, along with the additional toxic threat posed by aluminum-containing vaccines, makes it increasingly apparent that earnest investigation of the link between vaccines and autism should be a top research priority.

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The vaccine issue is something that has put a torn in the autism community for over a decade. The notion might not be fully 'disproved', but I certainly feel that the likes of NAA should move on to something more productive than propagating fringe theories.
If this NAA representative is someone who is knowledgable about this issue and wish to present the issue appropriately, the representative should note that the mercury that has been in vaccines is not the more well-known and toxic form of mercury, known as methyl mercury. It is ethyl mercury which has very different properties than methyl mercury and is not as likely to do as much, if any, damage.
The subjective perception of man is faulty, as someone who sketch I know this very well. Anecdotal evidence can be convincing for those who don't know any better, but can certainly be misleading aswell.
It seems to me that an unbiased study needs to be done. I have seen the vaccine damage with my own eyes. To say that the rate of Autism has not dropped with the removal of thimerosal from vaccines is sad. We all know how long the vaccines that had thimerosal already in dr.'s offices stayed and got used up. Has anyone asked this question? "Could it be the thimerosal, aluminum and toxic environment our world has become that is causing this epidemic? You cannot give mercury to children at the levels we have and not expect something to happen to them. You cannot live in a toxic environment and not expect something to happen to kids and you cannot give them aluminum and expect that nothing will happen to them. All three are going to effect more kids than not and they have!