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. 2021 Mar 26;422:132902. doi: 10.1016/j.physd.2021.132902

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Fig. 2 — Time development of infectious disease corresponding to the parameters $β = 10$ and $γ = 1$ . (a) $i_{0} = 2 \times 1 0^{- 1}$ , (b) $i_{0} = 1 0^{- 5}$ and (c) $i_{0} = 1 0^{- 8}$ .