The safety studies most often referred by vaccine regulators when making claims about the safety of aluminum in vaccines, have ignored the immunotoxicity of aluminum. Vaccinologists admit that they neither understand the general immunological mechanisms involved in vaccination nor do they understand the mechanisms involved in aluminum adjuvant action. Thus vaccine regulators have no scientific basis to make vaccine safety claims. Given this situation one would expect that vaccine regulators would be very cautious about making vaccine safety claims. Instead, they collude with vaccine makers to actively hide vaccine safety problems and mislead the public. The dual role of immunotoxicity and neurotoxicity of aluminum in autism is also covered. Cow's milk contaminated aluminum adjuvanted vaccines cause the synthesis of folate receptor antibodies. These antibodies block folate uptake causing cerebral folate deficiency and autism. The folate deficiency in turn, causes aluminum accumulation in the brain, resulting in neurotoxicity and exacerbation of autism.