Before revision:  Higher \psi is found in highly disassortative networks, which provides an explanation on why disassortative networks may be better at suppressing epidemics. Furthermore, We find that \psi has a monotonically decreasing relationship with cumulative incidence, indicating that higher \psi corresponds to lower cumulative incidence .
After revision:  Higher \psi is found in highly disassortative networks, however, the suppression effect diminishes over time due to scattering of non-vaccinating nodes, and frequent switching between the predominantly vaccinating and non-vaccinating phases of the dynamics .