The findings , in the Journal of the American Medical Association , are based on a study of as many as one young people . Some children in the study had elder siblings with autism . But researchers found vaccines had no effect on autism risk , whether or not a sibling in the family was diagnosed .
The findings , in the Journal of the American Medical Association , are based on a study of about 95,000 young people . Some children in the study had elder siblings with autism . But researchers found vaccines had no effect on autism risk , whether or not a sibling in the family was diagnosed .