Vaccine making pharmaceutical companies are permitted by the FDA to do their own safety testing, with no oversight and no verification from a financially independent entity. As mentioned in the point above, they do not use placebos for controls. Nevertheless, when they say that the trial vaccine proved to be no more dangerous or deadly than the aluminum adjuvant, or other vaccine, or combination thereof, against which it was tested, they declare it safe. Is that how you want medical procedures for your children being declared safe? The FDA and CDC accept this current method of testing. They also accept that vaccines are not tested for carcinogenicity, mutagenicity, or impairment of fertility.