TABLE 2.

Parameters estimated from the observed data in China ³⁶

Parameters	Description
${\lambda }_1$	0.01
${\lambda }_2$	0.188
$\delta$	0.4
$\gamma$	0.85
$1-\gamma$	0.15
${\alpha }_1$	0.141
${\alpha }_2$	0.141