Once again combinations of vaccines are being recommended despite no other purpose than economic and convenience matters. Notice that second only to religious objections, the massive distrust of our vaccination regimen due to the high and increased incidence autism leaves the matter open to further discussion and calls for definitive identification of the etiology (medical cause) of autism. Until the CDC and the National Institutes of Health find out the cause of autism, many people in the US will continue to distrust the profit motive of pharmaceutical companies and the convenience factor of overworked pediatricians burdened with the public health of our children. Separate injections is the only way to eliminate the risk of compromised children's immune systems in a mass medical delivery system prone to overlook the risk factors for certain genetically predisposed neurological genotypes. As we have yet to be able to determine if autism is caused by mostly environmental factors or genes, we risk the quality of life of every child subjected to the "life-or-death" warnings. First, do no harm.