Now, ethylmercury in large quantities is nasty stuff, but the amount you get from a vaccine works out to less than eating a can of tuna.
You can't compare since the first is in fact injected. If you'd actually know what you were talking about then you'd also know mercury is very sticky. Something Mike Adams aka the Health Ranger found out since he timulated a digestive system artificially. He operates instruments in his lab which test for heavy metals. Furthermore Thimerosal is a pretty bad antibacterial agent so it has nothing to do in a vaccine which gets pushed into babies which don't have any immunity yet. If you want to learn about vaccines go to @canadian-coconut. Stop spreading BS please.
When you eat something, it still ultimately ends up in your blood stream - injecting it or absorbing it through the digestive tract, why does it matter?
It's somewhat besides the point as Thimerosal is no longer used in a lot of modern vaccines.
Why you think the human has evolved so well, of course if you digest food and there is aluminum in it it's much less toxic then to have needles filled with adjuvants to circumvent it. The forms of aluminum in vaccines are neurotoxic just as many if not all forms of mercury.