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. 2021 Feb 23;11:4402. doi: 10.1038/s41598-021-83971-x

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© The Author(s) 2021

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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Mean and standard deviation of (A) relative incidence (RI); (B) relative death rate (RDR) and (C) air relative humidity (RH) at low, medium and high altitudes in cities in Brazil with a population above 200 thousand inhabitants (1) until May 17, 2020; (2) until June, 01, 2020; (3) until June, 16, 2020; (4) until July, 01, 2020. *Significant difference by analysis of variance and average values followed by the same letters (superscript a or superscript b) do not differ by the Tukey test (p < 0.05).