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. 2023 Apr 15;13:6156. doi: 10.1038/s41598-023-32953-2

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© The Author(s) 2023

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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Comparison of general and school testing. (A) The total number of general and school tests that were performed between weeks 2021-08 and 2022-08. (B) Proportion of positive general and school tests (%). The age of 19 years was used as the threshold between the group of children and adults. (C) Ct distributions of positive general and school tests shown as violin plots, supplemented with mean Ct values (black points) and notched boxplots.