Table 2
The model reaction constants (parameters) and initial individual populations for COVID-19 epidemic outbreak with their biological definitions, all data are confirmed cases in China presented in [15].
| Symbols | Biological definitions | Estimated values |
|---|---|---|
| S(0) | Initial susceptible individuals | 11.081 × 106 |
| E(0) | Initial exposed individuals | 105.1 |
| I(0) | Initial symptomatic infected individuals | 27.679 |
| A(0) | Initial pre-symptomatic infected individuals | 53.839 |
| Sq(0) | Initial quarantined susceptible individuals | 739 |
| Eq(0) | Initial quarantined exposed individuals | 1.1642 |
| H(0) | Initial quarantined hospitalized individuals | 1 |
| R(0) | Initial recovered individuals | 2 |
| k1 | Contact rate | 14.781 |
| k2 | Probability of transmission per contact | 2.1011 × 10−8 |
| k3 | Quarantined rate of exposed individuals | 1.8887 × 10−7 |
| k4 | Transition rate of exposed individuals to the infected class |  |
| k5 | The multiple of the transmissibility of A to I | 0.3 |
| k6 | Rate at which the quarantined uninfected contacts were released into the wider community |  |
| k7 | Probability of having symptoms among infected individuals | 0.86834 |
| k8 | Transition rate of symptomatic infected individuals to the quarantined infected class | 0.13266 |
| k9 | Transition rate of quarantined exposed individuals to the quarantined infected class | 0.1259 |
| k10 | Recovery rate of symptomatic infected individuals | 0.33029 |
| k11 | Recovery rate of asymptomatic infected individuals | 0.13978 |
| k12 | Recovery rate of quarantined infected individuals | 0.11624 |
| k13 | Disease-induced death rate | 1.7826 × 10−5 |
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