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For as long as I can recall, this has been one of the clarion calls of the autism/antivaccine/pro-disease groups – that the only way to know if vaccines cause autism is to do a ‘simple’ study of vaccinated vs unvaccinated populations. Indeed, Generation Rescue carried out an ill-fated phone survey that in reality meant absolutely nothing so badly was it put together and carried out. But even if it had been well designed and carried out the results were not good for pro-disease anti-vaccine autism believers:

Number of boys and girls with Aspergers
Unvaccinated: 1% of total
Partially vaccinated: 2% of total
Fully vaccinated: 1%
Fully and Partially combined: 2%

Conclusion: you are 1% more likely to have Aspergers if you have been partially vaccinated than unvaccinated. If you are fully vaccinated your chance of being Aspergers is no greater than if you were unvaccinated.

Number of boys and girls with PDDNOS
Unvaccinated: 2% of total
Partially vaccinated: 2% of total
Fully vaccinated: 1%
Fully and Partially combined: 1%

Conclusion: you are 1% more likely to have PDDNOS if you are unvaccinated. If you are fully vaccinated your chance of being PDDNOS is 1% less than if you were unvaccinated.

Number of boys and girls with Autism
Unvaccinated: 2% of total
Partially vaccinated: 4% of total
Fully vaccinated: 2%
Fully and Partially combined: 2%

Conclusion: you are 2% more likely to have autism if you have been partially vaccinated. If you are fully vaccinated your chance of being autistic is no greater than if you were unvaccinated.

Number of boys and girls with all ASD’s
Unvaccinated: 4% of total
Partially vaccinated: 6% of total
Fully vaccinated: 3%
Fully and Partially combined: 3%

Conclusion: you are 2% more likely to have an ASD if you have been partially vaccinated. If you are fully vaccinated your chance of being autistic is 1% less than if you were unvaccinated.

Overall conclusion: the best way to avoid being diagnosed with an ASD is to be fully vaccinated according to the CDC schedule.

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