Table 1 Parameters and their meanings in this paper

A

the constant recruitment rate of the population

β

The infection rate of the susceptible population

μ

The natural mortality rate of all populations

c

The rate that the infected recovers and comes into the susceptible class

ε

The rate at which some exposed people become infective

α

The mortality rate of the infected and quarantined population due to disease

\(\sigma_{1}\)

The quarantined rate of the exposed population

\(\sigma_{2}\)

The quarantined rate of the infected population

\(\gamma_{1}\)

The recovery rate of the exposed population

\(\gamma_{2}\)

The recovery rate of the infected population

\(\gamma_{3}\)

The recovery rate of the quarantined population