Figure 1From: Impact of external sources of infection on the dynamics of bovine tuberculosis in modelled badger populationsRelationships of (a) mean prevalence and (b) percentage of model runs in which disease has persisted as a function of equilibrium group size. The thick line shows badger-derived infection only and the thin black lines show combined badger-derived and external sources of infection (scenario 2) with probabilities of 0.0001 (thin dotted line), 0.001 (thin dashed line) and 0.01 (thin solid line). Vertical bars denote 95% confidence intervals.Back to article page