Immunization Debate

I've heard a lot lately about wether to immunize children or not. In the past, immunizing was always thought to be the best thing and necessary to protect children from many diseases. Lately, much has been argued that immunizing can cause disabilities such as autism and ADD. I wanted to get other mom's opinions on this matter. I know this may not necessarily be what this blog is intended for, but it does concern the running of our homes somewhat. Anyways, let me know what you think!