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. 2014 Nov 30;14:295. doi: 10.1186/s12887-014-0295-2

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© Cunliffe et al.; licensee BioMed Central Ltd. 2014

This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.

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Age and seropositivity rates at pre-dose-1 time point in the placebo groups (of the Total vaccinated cohort). Numbers on top of the bars indicate mean age in weeks with standard deviation at pre-dose-1 time point.