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. 2021 Jul 19;10(7):e1312. doi: 10.1002/cti2.1312

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© 2021 The Authors. Clinical & Translational Immunology published by John Wiley & Sons Australia, Ltd on behalf of Australian and New Zealand Society for Immunology, Inc

This is an open access article under the terms of the http://creativecommons.org/licenses/by-nc/4.0/ License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited and is not used for commercial purposes.

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(a) Antibody levels for the five best‐performing antigens in positive (n = 331) and negative (n = 2090) controls. Purple dots represent signals classified as positive. Antibody correlation using 331 positive (triangles) and 290 negative (dots) control samples for (b) Spike‐f and S1, (c) Spike‐f and NC‐C, and (d) NC and NC‐C. (b –d): purple, seropositive against both antigens, used for calculating the Pearson correlation coefficient; green, seropositive against Spike‐f; blue, seropositive against S1/NC‐C; grey, seronegative.