Notation  Value  Description  Reference 
$\alpha $  0.1818  Trans. rate of persons in state E (day^{−}^{1})  [1] 
$\eta =\theta $  $\frac{1}{14}$  Trans. rate of persons in state ${I}_{u}\mathrm{,}\text{\hspace{0.17em}}{I}_{r}$ to state R (day^{−}^{1})  [1] 
f  0.7  Fraction of asymptomatic infectious that become reported symptomatic  fixed 
$\beta $  $\frac{1}{7}$  Trans. rate of a persons in state I (day^{−}^{1})  [11] 
${\beta}_{1}=f\beta $  0.1  Rate at which asymptomatic infectious become reported symptomatic 

${\beta}_{2}=\left(1f\right)\beta $  0.0428  Rate at which asymptomatic infectious become unreported symptomatic 

${t}_{0}$ 
 Time at which the epidemic started  fitted 
${S}_{0}$ 
 Number of susceptible at time ${t}_{0}$  fitted 
${I}_{0}$ 
 Number of asymptomatic infectious at time ${t}_{0}$  fitted 
${I}_{{r}_{0}}$ 
 Number of unreported symptomatic infectious at time ${t}_{0}$  fitted 
$\gamma $ 
 Transmission rate  fitted 