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Advances in Continuous and Discrete Models

Theory and Modern Applications

Figure 3 | Advances in Difference Equations

Figure 3

From: Modeling the spread of porcine reproductive and respiratory syndrome virus (PRRSV) in a swine population: transmission dynamics, immunity information, and optimal control strategies

Figure 3

The epidemic size and the endemic number: (a) the epidemic size when q varies and \(u=0,0.5,1,1.5, 2\); (b) the epidemic size when u varies and \(q=0,0.3,0.5,0.8,1\); (c) the endemic number when when q varies and \(u=0,0.5,1,1.5,2\); and (d) the endemic number when u varies and \(q=0,0.3,0.5,0.8,1\)

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