The false beliefs of anti-vaxxers are never changed when they are "inundated with evidence". It is a religion, and they hold on to their delusions no matter what evidence is presented. You state quite categorically that "vaccines have been known to cause autism." They have not. It has been disproved again and again, yet this lie continues to be spread. 

I'm glad you decided to vaccinate your children. My uncle became profoundly deaf at the age of five when he contracted measles before vaccination became available. Although he was bright, he was never able to get anything more than a menial job during his short life. He was killed when he stepped off the curb and didn't hear the horn of the car that ran over him. The person who suffers from parental ignorance on vaccination is the child. And it's unforgivable in this scientific age.