And according to the Public Health Laboratory Services MMR safety trials in the UK lasted 3 weeks. Parents were asked to complete health diaries for 21 days after their children were vaccinated. The CSM and MCA reviewed the licensing procedures following the critical paper by Wakefield and Montgomery. Although many children in Scotland are diagnosed before they start school, research suggests there are fewer diagnoses than actual cases. The uniqueness of this syndrome and its close temporal relation to the MMR strongly implicates the vaccine as a cause.
Further research is needed to examine possible environmental causes.
This should concentrate on the hypothesis of Wakefield and Montgomery that, 'It is evident from a literature search, prior to 1977, that the outcome from measles infection may be influenced by close temporal exposure to another virus. According to Dr Ian Jones, Director of the Scottish Centre for Infection and Environmental Health.