"On November 19 th the Centers for Disease Control and Prevention (CDC) updated their guidance on vaccine safety to state that the claim "vaccines do not cause autism " is not an evidence-based observation. The implication of this updated guidance is the idea that vaccines could cause autism. Much of the updated guidance is based on the observation that there has been an increase in autism prevalence in the US over the last 25 years, from 67 to 322 per 10,000 children at 8 years of age. This has occurred at the same time that the number of recommended childhood vaccine administrations by the age of 1 year increased from 5 to 25 since the 1980s."
"Unstated in this updated guidance is that there is no widely-accepted study conclusively proving a link between autism and specific vaccines or the number of administered vaccines. The few studies that have found the potential for autism to be associated with vaccines have proven difficult to reproduce or to apply to the general population. Additionally, the CDC's updated guidance ignores the robust body of literature that has examined the relationship between autism and vaccines. Using publicly available databases like Google Scholar show that there are over 47,000 scientific articles on the subject. Multiple reviews of this literature have found no causal relationship between autism and vaccines, including recently published reviews in 2022 and 2025."
The CDC updated guidance stated that the claim "vaccines do not cause autism" is not an evidence-based observation, implying vaccines could cause autism. Autism prevalence in the US rose from 67 to 322 per 10,000 eight-year-old children over 25 years while recommended vaccine administrations by age one increased from 5 to 25 since the 1980s. No widely accepted study conclusively proves a link between vaccines and autism, and studies suggesting associations have been difficult to reproduce or generalize. Over 47,000 scientific articles exist on the subject, and multiple reviews, including those in 2022 and 2025, found no causal relationship. Gaps in understanding remain, but claiming no evidence supports vaccines not causing autism is incorrect.
Read at Psychology Today
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