MMR vaccine
These possible triggers were reported as MMR in eight cases, and measles infection in one. The paper was instantly controversial, leading to widespread publicity in the UK and the convening of a special panel of the UK's Medical Research Council the following month. One 2005 study in Japan found that there was no causal relationship between the MMR vaccine and autism in groups of children given the triple MMR vaccine and children who received individual measles, mumps and rubella vaccinations. In Japan, the MMR vaccine had been replaced with individual vaccinations in 1993.