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. 2023 Apr 14;19(1):2193119. doi: 10.1080/21645515.2023.2193119

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© 2023 The Author(s). Published with license by Taylor & Francis Group, LLC.

This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial-NoDerivatives License (http://creativecommons.org/licenses/by-nc-nd/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited, and is not altered, transformed, or built upon in any way. The terms on which this article has been published allow the posting of the Accepted Manuscript in a repository by the author(s) or with their consent.

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Figure 3. — Percentage of subjects with seroconversion (defined as hemagglutination inhibition [HI] ≥1:40 for subjects negative at baseline [HI <1:10] or a minimum 4-fold increase in HI titer for subjects positive at baseline [HI ≥ 1:10]) on Day 43) or a ≥4-fold increase in microneutralization (MN) titers. (a, b) Seroconversion in adults aged 18–64 y (a) and ≥65 y (b). Error bars represent the 97.5% confidence interval (CI). (c, d) at least 4-fold increase in MN titers in adults aged 18–64 y (c) and ≥65 y (d). Error bars represent the 95% CI.