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. 2024 Jun 11;14:13417. doi: 10.1038/s41598-024-64414-9

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© The Author(s) 2024, corrected publication 2024

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.

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Seroprevalence of anti-SARS-CoV-2 (S) and (N). Figures (A) and (B) demonstrate anti-SARS-CoV-2 (S) and (N) antibodies of different convalescent patients with a 21-month follow-up and mean of each month. Figure C demonstrates the dynamics of anti-SARS-CoV-2 (S) and (N) within 21 months using two y-axes with different measurement ranges. The peak value for anti-SARS-CoV-2 (S) was 1000U/ml, for anti-SARS-CoV-2 (N)-140 COI.