Figure 7
Comparison between the effects of free- and partial-subsidy policies in the parameter plane (β, δ).
Left and right panels: differences in the vaccination coverage and epidemic size, VP − VF and RP − RF, respectively, in the β-δ plane for c = 0.5 (a1-b1) and c = 0.9 (a2-b2). Other parameters are the same as those in Fig. 1.
