There's actually a movement growing in popularity within the USA that's opposed to vaccines. It's not religious in nature, by any stretch. It stems from, of all things, the Internet. Basically, a bunch of housewives with way too much time on their hands started emailing/forums where they self-diagnose and have reached the conclusion that organized medicine at large is really a front for the pharmaceutical companies. If I remember correctly, vaccines are responsible for ADD, ADHD, the formerly rare but now ubiquitious autism. Personally, I believe if the parents spent a little more time paying attention to their kids, and a little less surfing the web for more information on how to take-down the global medical/pharmaceutical conspiracy, they might actually FIND the cure for the cognitive/behavioral syndromes that plague their offspring, but then what do I know.... I actually get my shots.