The SIR epidemic model from a PDE point of view

Details The SIR epidemic model from a PDE point of view The SIR epidemic model from a PDE point of view

2009-12-16

arxiv.org/abs/0912.3225v1

Biology

Quantitative Biology

Populations and Evolution

Scientific paper

We present a derivation of the classical SIR model through a mean-field approximation from a discrete version of SIR. We then obtain a hyperbolic forward Kolmogorov equation, and show that its projected characteristics recover the standard SIR model. Moreover, we show that the long time limit of the evolution will be a Dirac measure. The exact position will depend on the well-know $R_0$ parameter, and it will be supported on the corresponding stable SIR equilibrium.

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