Sensitivity analysis of peak prevalence to the efficacy and length of intervention. A. Sensitivity of relative peak prevalence of infectious individuals to reduction in the reproduction number, α. The vertical axis represents I(tm,1)/I(tm,0), where I(tm,0) and I(tm,1) represent the peak prevalence in the absence and presence of intervention, respectively. The time length of intervention, t1 is fixed at Day 50. B. Sensitivity of relative peak prevalence of infectious individuals to the time length of the intervention, t1. α is fixed at 0.90. For both panels, the lines are truncated to satisfy αR(0) ≥ 1 and t1 <tm,0where tm,0is the time to observe peak prevalence in the absence of intervention.