The pluses and minuses of0 | Zendy

Michael C. Roberts | Zendy

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The pluses and minuses of₀

Author(s) -

Michael C. Roberts

Publication year - 2007

Publication title -

journal of the royal society interface

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.655

H-Index - 139

eISSN - 1742-5689

pISSN - 1742-5662

DOI - 10.1098/rsif.2007.1031

Subject(s) - value (mathematics) , epidemic model , population , measure (data warehouse) , basic reproduction number , mathematical economics , computer science , biology , mathematics , statistics , demography , sociology , database

The concept of the basic reproduction number (R0) occupies a central place in epidemic theory. The value of R0 determines the proportion of the population that becomes infected over the course of a (modelled) epidemic. In many models, (i) an endemic infection can persist only if R0>1, (ii) the value of R0 provides a direct measure of the control effort required to eliminate the infection, and (iii) pathogens evolve to maximize their value of R0. These three statements are not universally true. In this paper, some exceptions to them are discussed, based on the extensions of the SIR model.

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