Table 4.

The parameters in Eq. (21)

Parameters	Description	Units
$\mu$	Natural death rate	${\text{day}}^{-1}$
${\mathit{\mu }}_{\mathit{S}}$	Virulence (Infected death rate)	${\mathbf{\text{day}}}^{\mathbf{-}\mathbf{1}}$
${\omega }^{-1}$	Expected time in the asymptomatic state	$\text{days}$
v	Recovery rate	${\text{day}}^{-1}$
p	The fraction that moves along the “mild” recovery track
${ϵ}^{-1}$	Average number of days before infectious	$\text{days}$
$\alpha$	Transmission rate through the asymptomatic individuals	${\text{day}}^{-1}$
$\beta$	Transmission rate through the symptomatic individuals	${\text{day}}^{-1}$

The infected death rate is considered as the measure of virulence in the model, and it is highlighted in the table as a row of bold text