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. 2020 Oct 16;220(1):2–22. doi: 10.1016/j.jeconom.2020.08.010

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Fig. 1 — SIR model simulations. Notes: We normalize the size of the population to $N = 100$ and set the initial conditions to $S_{0} = 97$ , $I_{0} = 3$ , and $R_{0} = 0$ .