The illustration is Cerberus from Salvador Dali's series based on The Divine Comedy by Dante Alighieri. (Click on the image to see a larger version.)
It is almost beyond the comprehension of sane people that there should be organised opposition to vaccines. A special place should be reserved in Hell for the people who want to kill or maim children by preventing them from receiving vaccinations. This is a special case of health fraud, because most of the other sorts at least pretend to cure something.