There is an error in the Table 3. Within the column labeled " OR (95% CI) " , the values are incorrect for the row labeled " Non-vaccine serotypes ". The correct values are: 1.5 (0.8–3.0). Please see the corrected Table 3 here. Copyright: © 2016 Hanada et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.