Date	Event	Description
8 July 2020	Amended	The NIHR disclaimer and funding stream detail have been added to the Sources of support section.
2 May 2019	New search has been performed	A new author joined the team to update this review. We included new vaccines MMRV and MMR+V in an updated search from 4 October 2016 to 2 May 2019. We included 34 studies on safety and 40 studies on effectiveness. We included 4 studies on safety and 8 studies on effectiveness that were previously awaiting classification in our 2012 review update.
2 May 2019	New citation required but conclusions have not changed	Our conclusions remain unchanged.
4 October 2016	Feedback has been incorporated	Feedback comment inserted.
12 May 2011	New search has been performed	We updated the searches and included 33 new trials in the review, including one previously excluded trial (ca‐Marolla 1998). We excluded 50 new trials, and 13 new trials are awaiting classification. The conclusions remain unchanged.
1 February 2011	New citation required but conclusions have not changed	A new author joined the team to update the review.
6 May 2008	Amended	Converted to new review format.
8 August 2006	Feedback has been incorporated	Feedback comment and reply added to review.
18 December 2004	New search has been performed	Searches conducted.