Not surprised. Anti-vaxers are fueled by emotion, not logic.
Indeed. Facts don’t enter into it. They are convinced of their beliefs and nothing will change their minds. Unless, perhaps, they might be like some of the parents who lost children to these diseases, like the author Roald Dahl.
http://news.sky.com/story/1419786/roald-dahl-wrote-of-daughters-measles-death
Pleads for people to vaccinate their children.