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. 2022 Jan 19;10(1):e01181-21. doi: 10.1128/spectrum.01181-21

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Copyright © 2022 Fujigaki et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution 4.0 International license.

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FIG 4 — Correlation between virus-neutralizing activity and IgG (A), IgM (B), and IgA (C) levels after the second vaccination. Antibody measurement by ELISA and neutralization assays were performed using sera from 30 subjects after the second vaccination. The index of the highest sera dilution factor with cytopathic effect inhibition was defined as the microneutralization test titer (MNT). The correlation was calculated using Spearman’s correlation coefficient. The values of Spearman’s r and p are presented in each figure.