Despite what some tight-knit groups advocate, there's no evidence suggesting any type of vaccine causing autism or other mental health disorders. Vaccines prevent deadly disease such as polio, measles, pneumonia, etc. and nearly eradicated such diseases. Because of this, many people have been able to skip vaccinations, due to the risk of actually confronting these diseases being greatly reduced. But in contrary, this anti vaccination movement has caused a slight resurgence in preventable diseases, such as whooping cough. It's far safer to vaccinate than to not. The only ones who should be expemp from vaccination are ones who are allergic.