Table 1.

Estimated parameters.

Symbol	Definition	Value/per day	Source
$\Lambda$	Birth rate	2553	Estimated
$\mu$	Natural death rate	$\frac{1}{64.38\times 365}$	Estimated
$\beta$	Contact rate	0.8999	Fitted
$\kappa$	Infectious of $I_s$	0.7800	Fitted
$\nu$	Infectious of $I_o$	0.4959	Fitted
$\tau$	Incubation period	0.8999	Fitted
$\psi$	The rate of flow to $I_a$	0.9566	Fitted
$\varphi$	The rate of flow to $I_o$	0.0101	Fitted
$d_1$	Disease death rate of asymptomatic people	0.0015	Fitted
${\delta }_1$	Recovery rate of $I_a$	0.8447	Fitted
${\delta }_2$	Recovery rate of $I_s$	0.0200	Fitted
${\delta }_3$	Recovery rate of $I_o$	0.6746	Fitted