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. 2022 Oct 4;13:1010835. doi: 10.3389/fimmu.2022.1010835

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Copyright © 2022 Chatsiricharoenkul, Niyomnaitham, Posen, Toh, Licciardi, Wongprompitak, Duangchinda, Pakchotanon, Chantima and Chokephaibulkit

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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Geometric mean concentration of anti-RBD IgG at baseline, 4 months after first dose, 2 and 12 weeks after second dose for all study arms. Data from IM-IM vaccine regimens serve as the reference group for comparison (9). Data presented as geometric mean concentrations (GMC) and 95% confidence intervals. P<0.05 is considered statistically significant. BAU, binding antibody units. n= number of participants.