Thimerosal
You cannot use thimerosal as an arguing point against vaccines because the pro vaccination crowd is well prepared for it.
The pro-vaccine people pushing vaccines on everyone are going to argue that thimerosal was in vaccines for decades before autism became a problem, and then use that as an excuse to say vaccines do not cause autism.
They are going to point out that thimerosal is not in wide use anymore, and that when it is it is always in the large multi shot containers of vaccines, and not in individual vaccines that come pre loaded in a syringe. They will then point to the fact that autism is just as prevalent in vaccinated children who were vaccined via a pre loaded syringe, and then say that proves it is not the thimerosal, and that vaccines do not cause autism.
JIM STONE