Table 1.

Parameters value.

Source\parameter	$\gamma$	${\beta }_1$	${\beta }_2$	${\alpha }_1$	${\alpha }_2$
Value	0.1	0.377	0.41	0.15	0.40
Data sources	journals	computing	fitting	fitting	fitting

Note: these three infection rates must be calculated based on the actual data, and cannot be assigned randomly, because the mathematical model is very sensitive to the parameter value. The calculation software used in this paper is MATLAB, version 7.0.