A new meta-analysis from the University of Sydney confirmed that there is no link between vaccinations and the development of autism spectrum disorders. The study, the largest of its kind, looked at multiple set of data involving more than 1.25 million children.

According to the study, there was no evidence to support a relationship between common vaccines for measles, mumps, rubella, diphtheria, and whopping cough and the development of autism, according to the news.com.au.

The study, the latest to debunk the claim vaccinations lead to autism, comes as measles outbreaks are becoming more common in the United States and other countries. Other diseases once thought nearly wiped out like whooping cough are also making comebacks as the anti-vaccine movement gained a foothold in the U.S.

The link between autism and vaccines took hold in 1998 when a British “scientist” published a paper in the medical journal Lancet that the MMR vaccine could cause autism. The “study” has since been discredited and all of his research and findings were found to be false.

In addition to the study finding no link between autism and vaccinations, the meta-analysis by the University of Sydney researchers found “the components of the vaccines (thimerosal or mercury) are not associated with the development of autism or autism spectrum disorder.