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. 2023 Sep 21;13:15757. doi: 10.1038/s41598-023-42692-z

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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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The monthly number of hMPV-positive cases detected through ARI surveillance in central Vietnam, 2007–2017. The numbers of hMPV cases are described using the blue line and the left side of the y-axis. The numbers of ARI cases are described using the orange line and the right side of the y-axis. hMPV human metapneumovirus, ARI acute respiratory infection.