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01 March 2004

A comparative evaluation of the effects of MMR immunization and mercury doses from thimerosal-containing childhood vaccines on the population prevalence of autism

David A. Geier, Mark R. Geier

Med Sci Monit 2004; 10(3): PI33-39 :: ID: 11608

Abstract

Background:The purpose of the study was to evaluate the effects of MMR immunization and mercury from thimerosal-containing childhood vaccines on the prevalence of autism.Material/Methods: Evaluations of the Biological Surveillance Summaries of the Centers for Disease Control and Prevention (CDC), the U.S. Department of Education datasets, and the CDC’s yearly live birth estimates were undertakenResults: It was determined that there was a close correlation between mercury doses from thimerosal--containing childhood vaccines and the prevalence of autism from the late 1980s through the mid-1990s. In contrast, there was a potential correlation between the number of primary pediatric measles-containing vaccines administered and the prevalence of autism during the 1980s. In addition, it was found that there were statistically significant odds ratios for the development of autism following increasing doses of mercury from thimerosal-containing vaccines (birth cohorts: 1985 and 1990–1995) in comparison to a baseline measurement (birth cohort: 1984). The contribution of thimerosal from childhood vaccines (>50% effect) was greater than MMR vaccine on the prevalence of autism observed in this study.Conclusions: The results of this study agree with a number of previously published studies. These studies have shown that there is biological plausibility and epidemiological evidence showing a direct relationship between increasing doses of mercury from thimerosal-containing vaccines and neurodevelopmental disorders, and measles-containing vaccines and serious neurological disorders. It is recommended that thimerosal be removed from all vaccines, and additional research be undertaken to produce a MMR vaccine with an improved safety profile.

Keywords: Adolescent, Autistic Disorder - epidemiology, Autistic Disorder - etiology, Child, Cohort Studies, Measles-Mumps-Rubella Vaccine - therapeutic use, Mercury - adverse effects, Odds Ratio, Preservatives, Pharmaceutical - adverse effects, Prevalence, Thimerosal - adverse effects, Vaccination - adverse effects, Adolescent, Autistic Disorder - etiology, Child, Cohort Studies, Measles-Mumps-Rubella Vaccine - therapeutic use, Mercury - adverse effects, Odds Ratio, Preservatives, Pharmaceutical - adverse effects, Prevalence, Thimerosal - adverse effects, Vaccination - adverse effects

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Medical Science Monitor eISSN: 1643-3750
Medical Science Monitor eISSN: 1643-3750