Fig. 2.

Time evolution of the cost functional (left), share of infectives (center) and social distancing policy (right) in the case of the seasonal flu (top) and common cold (bottom) in an advanced epidemic stage setting. Optimal duration of social distancing: $T=\{6.90,7.95,8.85\}$ in the case of the seasonal flu and $T=\{6.40,7.40,8.25\}$ in the case of the common cold, with $\varphi =\{0.8,1,1.2\}$ respectively.