Table 6.

The elasticity of transmission rate $\beta$ and the mean time of virus introduction to deviations from the default settings of epidemiological parameters.

Farm identifier	Elasticity of the MLEa for transmission rate $\mathit{\beta }$ (using method A) to changesb in the:				Elasticity of the mean time of virus introduction to changesb in the:
	Latent period	Infectious period (dying animals)	Infectious period (recovering animals)	% dying from disease	Latent period	Infectious period (dying animals)	Infectious period (recovering animals)	% dying from disease
Chickens 2014
A	1.76	− 0.50	–c	–c	0.17	0.18	–c	–c
B	1.52	0.18	–c	–c	0.13	0.24	–c	–c
C	2.93	− 0.36	–c	–c	0.14	0.18	–c	–c
Chickens 2016
F	1.54	− 0.43	–c	–c	0.25	0.16	–c	–c
C	0.80	− 0.38	–c	–c	0.34	0.19	–c	–c
Ducks 2016
H	0.78	− 0.07	− 0.09	± 0.06d	0.12	0.22	± 0.02d	− 0.14
I	0.82	0.50	0.00	− 0.34	0.19	0.17	0.00	0.04
E	0.47	0.00	− 0.08	− 0.05	0.13	0.15	− 0.03	− 0.14

^aMaximum likelihood estimate.

^bSee Supplementary Methods & Results S2 for an overview of the deviations of epidemiological parameters from their default settings.

^cAll infected chickens were assumed to die from disease.

^dThe estimated value of the transmission rate $\beta$ or the mean time of virus introduction did not consistently increase or decrease when the value of the epidemiological parameter was increased.