Dear parents, you are being lied to.
The link above is an incredibly good post for anyone who has friends pushing anti-vaccine propaganda. I see new parents who are put under a lot of pressure and stress from friends who are anti-vaccine (and Facebook has only made this worse). There is SO MUCH misinformation that I love when someone presents the trustworthy information in such a succinct manner. The linked post also contains lots of links that parents can use to do further research if needed.