Fig. 2.

Mean number of cattle infected by epidemics seeded on five cattle on a single farm (solid line, left-hand axis), or on one thousand cattle (dashed line, right-hand axis), based on movement data from 2000 to 2009. Mean values are joined with lines that are colour-coded to reflect the magnitude of the change. Results are generated from over 23,000 individual-level simulations for each year, and hence the confidence intervals on the means are very small. Significant changes to movement legislation are illustrated with blue arrows; Table 1 describes these changes in detail.