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. 2022 Jun 21;13:917905. doi: 10.3389/fimmu.2022.917905

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Copyright © 2022 Adjobimey, Meyer, Sollberg, Bawolt, Berens, Kovačević, Trudić, Parcina and Hoerauf

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Low neutralizing antibody response in older vaccinees of Sputnik-V, Johnson and Johnson, and Sinopharm groups. Graphs represent the relative expression of neutralizing antibodies observed using sera from Sputnik-V (A), Johnson and Johnson (B), Sinopharm (C), Moderna (D), BioNTech (E), and AstraZeneca (F) vaccinees in 3 different age categories: 18-40, 41-60, and 61-80+ years old. Each symbol represents individual donors. Indicated p values were calculated using Kruskal-Wallis ‘test followed by Dunn’s comparison post hoc to compare all groups. Bars represent the mean percentages of relative neutralizing antibody expression ± SEM. Significance is accepted if p <0.05.