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. 2020 Sep 25;10:15763. doi: 10.1038/s41598-020-72529-y

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© The Author(s) 2020

Open AccessThis 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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Total number of confirmed cases of Covid-19 in Italy, F(t) (red dots), reported in Ref.¹², since 21th February to 22th March 2020, compared with the closed cases, R(t) (blue dots), in the same period of time. If the numbers of closed cases are shifted in time by $T ≃ 11$ days (blue circles) they fairly overlap with the total numbers of cases.