Do vaccines cause autism, asthma and diabetes?

Almost 70% of parents who refuse to vaccinate their children do so because they believe vaccines may cause harm. Indeed vaccines have been blamed for causing asthma, autism, diabetes, and many other conditions--most of which have causes that are incompletely understood. Some parents believe that vaccines can "overwhelm the immune system."

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<p><a href="http://www.physorg.com/news132405658.html">Do vaccines cause autism, asthma and diabetes?</a></p> <p>Almost 70% of parents who refuse to vaccinate their children do so because they believe vaccines may cause harm. Indeed vaccines have been blamed for causing asthma, autism, diabetes, and many other conditions--most of which have causes that are incompletely understood. Some parents believe that vaccines can "overwhelm the immune system."</p>