The statistics of epidemic transitions
Fig 5
Dynamics of the number infected in a slow approach to elimination.
Critical slowing down does not lead to an increase in the variance of this variable as the immunization threshold is approached. However, critical slowing down can still be observed from the decrease in the frequency of oscillations in the autocorrelation function (ACF). Vaccine uptake ν increasing 0.025/year from ν = 0 in year 20. Other parameters are as in Fig 2.