Parents of children with autism spectrum disorder (ASD) may be at greater risk for developing antivaccine beliefs that lead to vaccine delays and/or refusals for their children. We investigated current parental vaccine hesitancy, parents’ beliefs about causes of children’s developmental delays, and children’s vaccination histories among parents of children with ASD or non-ASD developmental delays. Data were analyzed from 89/511 parents (17.4%) who completed the Parent Attitudes About Childhood Vaccines questionnaire and the Revised Illness Perception Questionnaire; 46.1% had childhood vaccination records available. Overall, 21/89 (23.6%, 95% confidence interval [CI]: 15.0-34.0) of parents were vaccine hesitant (ASD n = 19/21 [90.5%], non-ASD n = 2/21 [9.5%]). Parents of children with ASD were significantly more likely to agree with “toxins in vaccines” as a cause of their child’s developmental delays (28.4% vs 5.0%, P = .034). The odds of being vaccine hesitant were 11.9 times (95% CI 2.9-48.0) greater among parents who agreed versus disagreed that toxins in vaccines caused their children’s developmental delays. Rates of prior vaccine receipt did not differ between hesitant and nonhesitant groups.

自闭症谱系障碍 (ASD) 儿童的父母可能更容易产生抗疫苗信念，从而导致孩子接种疫苗延迟和/或拒绝接种。我们调查了目前父母对疫苗的犹豫，父母对儿童发育迟缓原因的看法，以及患有 ASD 或非 ASD 发育迟缓儿童的父母的儿童疫苗接种史。数据分析来自 89/511 名家长 (17.4%)，他们完成了家长对儿童疫苗的态度问卷和修订后的疾病认知问卷；46.1% 有儿童疫苗接种记录。总体而言，21/89（23.6%，95% 置信区间 [CI]：15.0-34.0）的父母对疫苗犹豫不决（ASD n = 19/21 [90.5%]，非 ASD n = 2/21 [9.5%] ）。P = .034）。在同意和不同意疫苗中的毒素导致孩子发育迟缓的父母中，对疫苗犹豫不决的几率要高 11.9 倍 (95% CI 2.9-48.0)。犹豫组和不犹豫组之间先前接种疫苗的比率没有差异。