Nothing can change the mind of a parent who believes there’s any chance their child might suffer a permanent learning disability as the result of a vaccine (which is weird because diseases like measles can kill kids?). These parents don’t believe in science. They believe in anecdotes from their friends and neighbors. They want something to blame, and the timing of the vaccine and their child’s ailments makes sense to them. Screw the evidence and screw the scientific method.
– Kristen Philipkoski, Gizmodo