Table 2. The 12 treatments modelled in Experiments 2, 3 and 4.

Treatment	Population size	Day infection introduced	Trip duration
1	10000	10	4
2	10000	10	10
3	10000	100	4
4	10000	100	10
5	10000	200	4
6	10000	200	10
7	20000	10	4
8	20000	10	10
9	20000	100	4
10	20000	100	10
11	20000	200	4
12	20000	200	10