Table 2.

Parameters of COVID-19.

Par.	Description
$\tau$	Inverse of the latent time from exposure to infectiousness onset
$\sigma$	Inverse of the time from infectiousness onset to possible symptoms onset
$\theta$	Inverse of mean incubation time (i.e. ${\theta }^{-1}={\tau }^{-1}+{\sigma }^{-1}$)
$\alpha$	Proportion of asymptomatic (undetected) infections
${\gamma }_1$	Recovery rate for asymptomatic or mild symptomatic cases
${\gamma }_2$	Recovery rate for severe and critical cases
$\mu$	Mortality rate among confirmed cases
$\delta$	Probability of detection by testing in compartment $E$