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. 2020 May 28;8:230. doi: 10.3389/fpubh.2020.00230

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Copyright © 2020 Carcione, Santos, Bagaini and Ba.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Number of infected individuals for different values of the initial number of exposed individuals, corresponding to R₀ greater (A) and less (B) than 1.