An Approximate Analytical Solution to the Sir Model

descriptionPublicationkeyboard_double_arrow_right Article , Other literature type 01 Jan 2021 English Publisher:Elsevier BVJournal:SSRN Electronic Journal (eissn: 1556-5068,

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Authors: Fernando Menezes Campello de Souza;

doi: 10.2139/ssrn.3780708

An Approximate Analytical Solution to the Sir Model

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Abstract

An analytical expression, a formula, for the removed individuals in an epidemic, as a function of time, is suggested as an approximation of a Susceptible, Infected, Removed (SIR) epiemics dynamics model solution. The formula is shown to have an excellent fitting to real world data, as exemplified by the case of Italy in the New Coronavirus pandemic.

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