Susceptible -> Susceptible_quarantined Infected -> Recovered Susceptible_quarantined -> Susceptible Susceptible -> 0 Susceptible_quarantined -> 0 Susceptible -> Asymptomatic Susceptible -> Exposed_quarantined Asymptomatic -> Infected Asymptomatic -> Recovered Asymptomatic -> 0 Infected -> 0 Infected -> Exposed_quarantined Exposed_quarantined -> Recovered Exposed_quarantined -> 0 Recovered -> 0