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Despite overwhelming evidence showing that no link exists between vaccination and autism spectrum disorder (ASD), parental concerns and vaccination hesitancy persist.
To examine whether a diagnosis of ASD affects subsequent childhood vaccination receipt, investigators retrospectively reviewed immunization records of over 3700 children (18% girls) born between 1995 and 2010 who received a diagnosis of ASD by age 5 years and a matched group of nearly 600,000 children without ASD (42% girls). Immunization records of younger siblings of both groups were also reviewed.
Children with ASD were significantly less likely to have received all vaccinations recommended at between ages 4 and 6 years (DTaP, IPV, MMR, VZV) compared with controls (82% vs. 94…