On a Nonautonomous SEIRS Model in Epidemiology
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- Zhang, T. & Teng, Z. Bull. Math. Biol. (2007) 69: 2537. doi:10.1007/s11538-007-9231-z
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In this paper, we derive some threshold conditions for permanence and extinction of diseases that can be described by a nonautonomous SEIRS epidemic model. Under the quite weak assumptions, we establish some sufficient conditions to prove the permanence and extinction of disease. Some new threshold values are determined.