I'm expecting to deliver my 3rd son in the next 3 weeks, so this debate has intrigued me. As a child I knew a few mentally challenged people, but I also knew of many Polio survivors. I remember the fear of Polio,and the braces, iron lungs, etc. I have a Bipolar 18 year old child. This is a possible side effect from a bad reaction to anti labor drugs administered when I was carrying him with some genetic correlation on my ex's side. Should I have needed them this pregnancy, I still would have taken the anti labor drugs, because the side effects from premature birth are much worse than the Bipolar outcome. I do not know if it is as clear cut, the immunization and autism debate, as the anti labor drugs/no drugs debate. I guess at this time I am leaning towards immunization, but I also intend to nurse this child into toddlerhood. My middle child was, and he is seldom sick, very smart, and a healthy weight. I guess I am saying I am not sure which way to go, but I have also seen so many people hurt by these diseases we are immmunized from.