A Lancet paper by Andrew Wakefield suggests a link between the MMR vaccine and autism. It is retracted in 2010, but vaccine fears it spread persist.
Contested history
Consensus: Large studies of millions of children find no link between the MMR vaccine and autism; the 1998 paper was retracted and found to rest on misrepresented data.
MMR vaccine causes autismDebunked
Population studies in Denmark, the U.S. and elsewhere covering millions of children show no higher autism rates in vaccinated children.
The 1998 paper misrepresented patient dataEstablished
The UK General Medical Council found serious professional misconduct in 2010, and a BMJ investigation documented altered case histories.