Table 2.

Description and probability distributions used for the different shedding routes and levels (from [10]).

	Parameter	Definition	Value
α	α 1, milk	Probability distribution of the shedding routes for the I − cows	0.31
	α 2, mucus/faeces		0.62
	α 3, milk + mucus/faeces		0.07
β	β 1, milk	Probability distribution of the shedding routes for the I + cows after 4 weeks post-calvingss	0.61
	β 2, mucus/faeces		0.33
	β 3, milk + mucus/faeces		0.06
β calv	β calv1, milk	Probability distribution of the shedding routes for the I + cows in the 4 first weeks post-calving	0.14
	β calv3, mucus/faeces		0.5
	β calv3, milk + mucus/faeces		0.36
γ	γ 1, milk	Probability distribution of the shedding routes for the $I^{milkpers}$ cows after 4 weeks post-calving	0.83
	γ 3, milk + mucus/faeces		0.17
γ calv	γ calv1, milk	Probability distribution of the shedding routes for the $I^{milkpers}$ cows in the 4 first weeks post-calving	0.25
	γ calv3, milk + mucus/faeces		0.75
Q1	Low level	Probability distribution of the shedding levels for all the I − and for the I + shedding in mucus/faeces after 4 weeks post-calving	0.85
	Mid-level		0.15
	High level		0
Q2	Low level	Probability distribution of the shedding levels for the I + shedding in milk after 4 weeks post-calving	0.4
	Mid-level		0.5
	High level		0.1
Q3	Low level	Probability distribution of the shedding levels for all the I + in the 4 first weeks post-calving	0.25
	Mid-level		0.25
	High level		0.5
Q4	Low level	Probability distribution of the shedding levels for the $I^{milkpers}$ shedding in mucus/faeces after 4 weeks post-calving	0.6
	Mid-level		0.4
	High level		0
Q5	Low level	Probability distribution of the shedding levels for all the $I^{milkpers}$ shedding in milk and for the $I^{milkpers}$ in the 4 first weeks post-calving	0.15
	Mid-level		0.6
	High level		0.25