(a)
(b)
(c)
(d)
Figure 8: The improvement in for total vaccination ratios ranging from 10% (top curves) to 50% in steps of 5% for the SIR model. Time origin is chosen as the peak of with no vaccination. Pulse vaccination starts at day (horizontal axis) and lasts for 14 days (a), 28 days (b), 70 days (c), and 140 days (d).