Cost effectiveness plane for intervention strategies. Each intervention strategy is plotted with horizontal position according to relative cost in dollars per member of population compared to no intervention, and with vertical position according to the number of life-years saved (LYS) per 10,000 population. The lower figure contains an enlarged view around the axis to clarify the position of interventions for moderate and mild pandemics. Colours denote pandemic severity: red for extreme (R0 = 2.7, CFR = 1.5%), green for moderate (R0 = 1.9, CFR = 0.25%) and blue for mild (R0 = 1.5, CFR = 0.03%). Crosses indicate interventions without vaccination, diamonds indicate vaccination interventions. Interventions are labelled as for Figure 1, abbreviations used in the figure legend are SC for school closure, CCR for community contact reduction, AV for antiviral treatment and household prophylaxis, and WR for workforce reduction.