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. 2020 Oct 27;10:18377. doi: 10.1038/s41598-020-75491-x

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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 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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COVID-19 spread rate in countries with distinct national BCG vaccination policy. (a) World maps show countries that never had a national BCG vaccination policy (in red), countries that had a universal BCG vaccination policy in the past (in green) and countries that currently have a universal BCG vaccination policy (in blue). (b) TB incidence per 100,000 inhabitants shown as mean ± SEM for all three groups of BCG policies (never (red), past (green) and current (blue) BCG vaccination policy). One-way ANOVA with Tukey posttest was performed. (c) CoV-2 spread rate is shown for all three groups of BCG policies (never (red), past (green) and current (blue) BCG vaccination policy). Data shown as median ± interquartile range. Maps were generated using the following website: https://mapchart.net/world.html.