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. 2020 Feb 7;10:2127. doi: 10.1038/s41598-020-58542-1

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© The Author(s) 2020

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 license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license 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 license, visit http://creativecommons.org/licenses/by/4.0/.

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Serological distribution of the patients. The sets of serum samples positive for nonstructural protein 1 (NS1+, red), immunoglobulin M (IgM+, green) and G (IgG+, blue) are represented by circles whose areas are proportional to the number of patients. The values at the intersections are presented. The solid line represents the set of serum samples positive for dengue (DV+), which is the union of NS1+ and IgM+. The dashed circle in light grey represents all 878 patients.