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. 2011 Apr 5;8(4):e1001017. doi: 10.1371/journal.pmed.1001017

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Flasche 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 properly credited.

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For comparison with the findings with Hanage and colleagues, we aggregate 6A and 6C to 6A/C and 15B and 15C to 15B/C. Bottom: Changes in ranked serotype distribution in overall carriage in our findings from 2001/2002 to 2008/2009.