A new study adds to a large body of evidence that there is no link between autism and any vaccine. The findings are based on medical records for 82,000 children whose mothers got the Tdap vaccine during pregnancy.
Researchers say those children have no greater risk of autism. That vaccine protects against tetanus, diphtheria and pertussis, better known as whooping cough.
The notion that vaccines could be related to autism goes back to the 1990’s starting with a small and now-debunked study that linked the measles vaccine to an increased risk of autism.
The Centers for Disease Control and Prevention says in the years since, research has consistently turned up no connection.