Table 2.

Estimation of the reproduction numbers R ₀ for MDA ⁺ and MDA ⁻ piglets using the best model (model 2)

	Shedding period (days)	Direct transmission rate β (days−1)	Susceptibility factor σ	R0
MDA+ piglets			0.39 [0.21–0.70]	5.8 [1.4–18.9]
	6.1 [5.9 – 6.4]a	2.43 [1.09 – 4.23]a
MDA− piglets			–	14.8 [6.4–27.1]

^aOverall population estimate applying to both groups.