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Many thanks to Alexander Goldstein for pointing out an error in the graphic. Earlier in the development process, we had included vaccines given to those in certain risk groups only. Since not all countries included this information in their schedules, we made the decision to remove these vaccines from all countries to make a fairer comparison. However, they were still being included in the cumulative graph. The error has now been corrected.
No competing interests
17 November 2015
William M Stahl-Timmins
Interactive data graphics designer
The British Medical Association, Tavistock Square, London WC1H 9JP