Whiteley, H, Smith, C and Hutchinson, J. Early Years: An International Journal of Research and Development 25(2): 155-166. Abstract: www.tandf.co.uk/journals
No effect of MMR withdrawal on the incidence of autism: a total population study This study involved children born between 1988 and1996 in Kohoku Ward (population approximately 300,000), Yokohama, Japan, where MMR vaccinations had fallen significantly in children born from 1988-1992, and were withdrawn in 1993. Results found a significant increase in autistic spectrum disorders (ASD) up to age seven in children born from 1988-1996 and a dramatic rise beginning with the birth cohort of 1993. Therefore, MMR is most unlikely to be a main cause of ASD and cannot explain the rise in ASD, and withdrawing MMR in countries where it is still being used cannot be expected to lead to a fall in ASD.
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