Figure 4

Sensitivity profiles for recovery rate for two models. Macdonald, Anderson and May sensitivity plots for recovery rate using parameter set 3 and “medium transmission” initial conditions, as in Table 5. A.$\partial i_h^{\ast }/\mathrm{\partial r}$versus r, Macdonald model, B.$\partial i_m^{\ast }/\mathrm{\partial r}$versus r, Macdonald model, C.$\partial i_h^{\ast }/\mathrm{\partial r}$versus r, Anderson/May model, D.$\partial i_m^{\ast }/\mathrm{\partial r}$versus r, Anderson/May model. Note the different profiles for the sensitivity of $i_m^{\ast }$ at low recovery rates.