The AP is reporting that Amazon has removed certain books that promote alleged cures for autism and vaccine misinformation.

The move is part of a larger effort by technology and social media companies to combat misinformation that has contributed to reduced vaccination rates and the rise of some infectious diseases.

Myths about autism and vaccinations have been circulating since 1998, when a British doctor named Andrew Wakefield published an article about a possible link between the measles-mumps-rubella (MMR) vaccine and autism. That study has since been debunked as fraudulent, and Wakefield lost his medical license in the midst of allegations over professional misconduct.