Vaccine schedules and the push for mandatory vaccination rests almost entirely on the premise that vaccination produces better health outcomes than not vaccinating.
Government agencies such as the CDC (Centre for Disease Control) in the US have been extremely reluctant to validate the benefits of vaccination vs un-vaccination.
What follows is some of the research that has predominantly been undertaken independently:
Vaccinated Vs. Unvaccinated Pilot Study: Early Vaccination Sees Exponential Increase in Chronic Disorders
Pilot comparative study on the health of vaccinated and unvaccinated 6- to 12- year old U.S. children