This claim originates from a 1998 study by Andrew Wakefield, which was later retracted by The Lancet due to serious ethical violations, data manipulation, and undisclosed conflicts of interest. Since then, multiple large-scale studies involving millions of children have found no causal link between vaccines (including MMR) and autism. For example, a 2019 Danish study of over 650,000 children found no increased autism risk from MMR vaccination. Leading health organizations worldwide — including the CDC, WHO, and the U.S. National Academy of Medicine — agree that vaccines do not cause autism. The original fear was based on fraud, not science.
Source:
https://www.cdc.gov/vaccinesafety/concerns/autism.html
Source:
https://www.cdc.gov/vaccinesafety/concerns/autism.html