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. 2021 Sep 15;9(2):e00731-21. doi: 10.1128/Spectrum.00731-21

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Copyright © 2021 Keuning 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 2 — SARS-CoV-2 antibody prevalence estimates in serum and saliva. (A) Prevalence estimate of SARS-CoV-2 RBD total antibodies in the Wantai assay for serum. (B and C) Prevalence estimates of SARS-CoV-2 S- (gray bars), RBD- (green bars), and N-specific (blue bars) IgG (B) and IgA (C) in the Luminex assays for serum (solid bars) and saliva (hatched bars). Prevalence was the calculated proportion with a value above the determined cutoff out of nonmissing values. Estimates are shown with 95% confidence intervals. S, trimeric SARS-CoV-2 spike protein; RBD, the monomeric receptor binding domain of the SARS-CoV-2 spike protein; N, SARS-CoV-2 nucleocapsid protein.