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. 2022 Jan 20;22:138. doi: 10.1186/s12889-021-12275-6

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© The Author(s) 2022, corrected publication 2022

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Fig. 13 — Contour plot of the COVID-19 reproduction number $R_{0}$ given in Eq. (2). a Varying hospitalization rate ω_H and infection rate β. b Varying quarantine rate ω_Q and hospitalization rate ω_H using infection rate β=0.22