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. 2022 Oct 11;10(10):1696. doi: 10.3390/vaccines10101696

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© 2022 by the authors.

Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).

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Relationship between infant 2-month and 6-month antibody titers and SARS-CoV-2 infection. Anti-Spike titers were measured in two- and six-month-old infants who were born to COVID-19 vaccinated individuals. (A) Kaplan–Meier curve displays time to SARS-CoV-2 infection for infants who developed COVID-19 through 9 months of age, grouped by those with high (upper 25%) and low (lower 25%) anti-Spike IgG titers in blood at two months of age (B) Kaplan–Meier curve displays time to SARS-CoV-2 infection for infants who developed COVID-19 after six months of age, grouped by those with high (upper 25%) and low (lower 25%) anti-Spike IgG titers in blood at six months of age. Analyses performed by a Mantel-Cox test.