Figure 8From: Beyond just “flattening the curve”: Optimal control of epidemics with purely non-pharmaceutical interventionsThe stability of the disease-free stationary state depends on the size of the susceptible population S̄ and the basic reproduction number \(\mathcal{R}_{0}\). For \(\bar{S}/N<\mathcal{R}_{0}^{-1}\), the outbreak of an epidemic is suppressed by a sufficiently high degree of herd immunityBack to article page