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. 2013 Aug 28;8(8):e72794. doi: 10.1371/journal.pone.0072794

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© 2013 Jones 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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Diagram indicating number of children enrolled into the study and number excluded or lost to follow-up during the course of the study.

Withdrew consent = participant no longer wished to be part of study cohort and preferred to be vaccinated at local clinic. Relocated=participant moved out of study area and therefore unable to attend study visits. Lost to follow up = study site unable to contact study participant. Outside window period = vaccination occurred outside protocol defined period of 6-12 weeks; 12-24 weeks and 38-42 weeks for the first, second and third doses respectively. PCV= 7-valent Pneumococcal Conjugate Vaccine.