Table 1.

Detailed description of state variables and relevant parameters of the newly proposed COVID-19 model (1).

Variable	Description
$S(t)$	Susceptible class
$E(t)$	Exposed class
$I(t)$	Infected
$Q(t)$	Quarantine class
$R(t)$	Recovered class
$\theta$	Recruitment rate into susceptible population
$\mu$	Natural mortality rate
$\delta$	COVID-19 death rate
$\omega$	Progression rate from exposed to infectious class
$\sigma$	Rate of loss of immunity
$\tau$	Treatment rate for infectious individuals
$\varphi$	Treatment rate for quarantine individuals
$\psi$	Proportion of individuals that maintain social distancing
$\upsilon$	Usage of a face mask and hand sanitizer by a portion of the population
$\rho$	Rate of recovery from infection
${\alpha }_c$	Effective transmission rate