I read about this as well. Unfortunately I wasn't very surprised at the result.
I was listening to a radio show the other day and they had a guest speaker from the CDC who was there to talk about vaccinations. One of the callers was a lady who started out her comment by saying "I don't trust anything the government says or does". She then went on to claim that she would never let her kids get more than one vaccination at once. She was convinced that vaccination "loading" as she called it was risky and untested (probably because her neighbor Betty told her so). The guest from the CDC explained that concurrent vaccination testing was a standard practice but the lady wouldn't believe him. She angrily challenged him to estimate how many times it had been tested and he replied "hundreds if not thousands of times" and went on to explain in detail about concomitant drug testing and the rigorous standards. But the lady would have none of it. Her answer after he explained everything was a haughty, "I don't believe you!".
And I believe "trust" is really the core problem we have here in the US when it comes to science. Most people don't understand enough about science to know what to believe, but to make things worse, there is a deep level of distrust in government and in information in general.
And when you think about it, "trust" is a key factor for most of us in what we believe. Even those of us who understand science well don't really understand all specialties well enough to evaluate their veracity. Instead, we trust certain sources, or we trust our own ability to link together verifiable information which exposes reliable sources.
So while I blame a lack of education on a lot of the disagreement with science, I also see the general level of distrust in information sources and government as another key cause.