Figure 1

(a) Schematic illustration of the compartmental epidemic model (1a)–(1g). The function \(u (t )\) describes a modification of the transmission dynamics due to NPIs. (b) State-dependent mortality rate f as a function of the number of patients in a critical state requiring intensive care. The mortality rate grows rapidly if the number of critical patients exceeds the number of available ICUs \(C_{0}\). Inset: The solid line is the regularized mortality rate (4b) that is used in the computations throughout the paper