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. 2016 Nov 2;63(Suppl 4):S148–S153. doi: 10.1093/cid/ciw561

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© The Author 2016. Published by Oxford University Press for the Infectious Diseases Society of America.

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 reuse, distribution, and reproduction in any medium, provided the original work is properly cited.

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Figure 1. — Open cohort study schedule. ^aSchedule for surveillance visits will be based on the infant's age at enrollment, not time since enrollment; ^bThree milliliters of blood to be collected for infant specimens. Home visit key: X₁ = twice weekly; X₂ = weekly; X₃ = fortnightly. Abbreviation: CBC, complete blood count.