This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. Primary support for the subproject and the subproject's principal investigator may have been provided by other sources, including other NIH sources. The Total Cost listed for the subproject likely represents the estimated amount of Center infrastructure utilized by the subproject, not direct funding provided by the NCRR grant to the subproject or subproject staff. Diagnoses of childhood developmental disorders involving autism-spectrum symptoms are increasing, estimated to affect 1 in 100 children in the United States. Childhood vaccines have been hypothesized to be contributory factors to this increase. The childhood vaccine regimen has an experimentally unstudied potential for cumulative and synergistic toxicities and possible immunologic interference to normal development. A prior study developed a primate model to assess neurodevelopmental consequences of the 1994-1999 pediatric thimerosal vaccine regimen (1994-1999). Significant neurodevelopmental deficits were evident for vaccinated animals in survival reflexes and standardized cognitive tests, and exposed animals developed gastrointestinal inflammation associated with focal transmural colitis, lymphoid hyperplasia, and syncytia.
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