Objective: To test the hypothesis that measles vaccination was involved in the pathogenesis of ASD as evidenced by signs of a persistent measles infection or abnormally persistent immune response shown by circulating measles virus or raised antibody titres in MMR vaccinated children with ASD compared with controls .
Design: Case-control study community based
Methods: A community sample of vaccinated children aged 10-12 years in the UK with ASD (N=98) and two control groups of similar age, one with special educational needs but no ASD (N=52) and one typically developing group (N=90), were tested for measles virus and antibody response to measles in serum.
Results: No difference was found between cases and controls for measles antibody response. There was no dose response relationship between autism symptoms and antibody levels. Measles virus nucleic acid was amplified by RT-PCR in PMBC from one case with autism and two typically developing children. There was no evidence of a differential response to measles virus or the measles component of the MMR in children with ASD, with or without regression, and controls who had either one or two doses of MMR. Only one child from the control group had clinical symptoms of a possible enterocolitis.
- Autism spectrum disorders
- MMR vaccination
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Page 834 under participants, 101 with ASD diagnosis-- the SD for the ages should be .88 but the . is omitted.
Table 1 the n= for narrow autism should read 32 not 3232.