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. 2021 Jan 13:dqaa015. doi: 10.1093/imammb/dqaa015

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© The Author(s) 2021. Published by Oxford University Press on behalf of the Institute of Mathematics and its Applications. All rights reserved.

This article is made available via the PMC Open Access Subset for unrestricted re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for the duration of the COVID-19 pandemic or until permissions are revoked in writing. Upon expiration of these permissions, PMC is granted a perpetual license to make this article available via PMC and Europe PMC, consistent with existing copyright protections.

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Fig. 14. — The curves of the number of susceptible persons , , without and with isolation for different values of . Curves from top to bottom correspond to the increasing . The beginning of the isolation occurs at days.

Inline graphic — The curves of the number of susceptible persons , , without and with isolation for different values of . Curves from top to bottom correspond to the increasing . The beginning of the isolation occurs at days.