Research Article

Modelling the Transmission Dynamics of COVID-19 in Six High-Burden Countries

Figure 2

Flow chart of the SLMCR mathematical model showing the five states and the transitions in and out of each state. : susceptible population; : latent population (not yet symptomatic); : mild population (moderate symptom); : critical population (severe symptom); : removal population; Λ: recruited rate; μ: death rate; β: transmission rate; α: force of saturation infection; ω1: progression rate from latent to a mild compartment; ω2: progression rate from the latent critical compartment; γ1: recovery rate from mild to removal compartment; : recovery rate from critical to removal compartment; : progression rate from mild to critical compartment due to the comorbidities with other diseases.