Qualitative analyses of SIS epidemic mod
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Jianquan Li; Zhien Ma
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Article
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2002
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Elsevier Science
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English
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SIS epidemic model with vaccination, temporary immunity, and varying total population size is studied. Three threshold parameters R.e, Ri, and Ra are identified. The disesss free equilibrium is globally stable if Rc 5 1 and unstable if Ro > 1, the endemic equilibrium is globally stable if Rc > 1. Th