Figure 8

The distribution of the number of unique infection sources per destination herd type. A herd is counted as an infection source if it introduced an infected animal to the destination herd in at least one replicate. Herd types are described in Table 1. A Number of unique infection sources per herd summarized by herd type of destination herds. Each box contains values between the first and the third quartiles, the horizontal line corresponding to the median. Vertical lines outside the boxes extend to 10^th and 90^th percentiles. B Tukey test-95% family-wise confidence level for each combination of herd types. The figure presents the value of the difference between the means and their respective 95% CI. The vertical dashed line indicates the point where the difference in means is zero. For the definition of unique infection source see text.