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. 2024 Feb 15;20(1):2308375. doi: 10.1080/21645515.2024.2308375

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© 2024 The University of Mississippi Medical Center. Published with license by Taylor & Francis Group, LLC.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent.

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Figure 2. — SARS-CoV-2 RBD-specific serum IgG endpoint dilution titers 50, 200, and 440 days following a second immunization with BNT162b2. Titers declined significantly between days 50 and 200 (p < .001) and rebounded significantly between days 200 and 440 (p < .001). Approximate time periods for the Delta and Omicron waves in Mississippi are shown in gray boxes.