Figure 1
From: Forecasting the long-term trend of COVID-19 epidemic using a dynamic model

Epidemic spreading diagram for SEIQ model. S: susceptible; E: exposed; I: infective; \(Q\): quarantined. Parameter \(\beta\) indicates the infectious rate. Parameter \(\sigma\) indicates the incubation rate with \(\sigma =\frac{1}{TE}\) (incubation period). Parameter \(\gamma\) indicates the quarantine rate with \(\gamma =\frac{1}{TI}\) (infectious period).