Table 2.

Transmission dynamics based on HI titres. Animals separated into low (<8 HI units) and high (≥8 HI units) HI titres against the challenge strain.

HI titre	β (day−1) (95% CI)	Var(β)	infectious period (day) (95% CI)	R (95% CI)	Var(R)
low	3.73 (2.37–5.85)	1.04	1.78 (0.30–10.67)	6.63 (1.06–41.5)	2.40
high	0.058 (0.01–0.33)	1.49	2.02 (0.47–8.67)	0.12 (0.017–0.795)	2.58