Table 2.

Values of the model parameters with 95% confidence interval and their sensitivity indices for disease outbreak in Italy.

Parameters	Values	Confidence Intervals	Sources	Sensitivity Indices
${\beta }_1$	0.951449	(0.936794, 0.964688)	Estimated	0.009988
${\beta }_2$	0.581276	(0.575499, 0.587713)	Estimated	0.303441
${\beta }_3$	0.865583	(0.855259, 0.876974)	Estimated	0.686570
${\gamma }_1$	0.098267	(0.096968, 0.099438)	Estimated	0.005791
${\gamma }_2$	0.017199	(0.016947, 0.017386)	Estimated	−0.109335
${\sigma }_1$	0.053847	(0.052798, 0.054150)	Estimated	−0.571763
${\sigma }_2$	0.01819	(0.017823, 0.018318)	Estimated	−0.126044
${\sigma }_3$	0.123555	(0.122569, 0.125177)	Estimated	−0.001421
$d_1$	0.18	—–	[37]	−0.002071
$\delta$	0.000168	(0.000165, 0.000169)	Estimated	−0.001637
$a$	0.553732	(0.548153, 0.561560)	Estimated	−0.006372
$b$	10.164964	(10.075988, 10.333965)	Estimated	—–
$\mu$	0.010658	—–	[37]	−0.187145
$A$	1224	—–	[37]	—–