Mercury is not used in vaccines. A preservative that has mercury in the molecule is frequently used as a preservative yes, it's an antibiotic. Saying vaccines have mercury is like saying salt has sodium.

Eat sodium, you die. Eat table salt you don't. Eat mercury you die. Eat Mercury((o-carboxyphenyl)thio)ethyl sodium salt you don't.

I can't take anybody seriously that doesn't get that basic fact.