Table 1.
Variable information of SIR model for Covid-19
| Name | Type | Units | Equation | Initial value |
|---|---|---|---|---|
| Population | Constant | People | 1e+06 | – |
| Susceptible | Level | People | Infecting | Population—initial infected |
| Infection | Level | People | Infecting-recovery | Initial infected |
| Recovered | Level | People | Recovering | 0 |
| Fraction susceptible | Auxiliary | Fraction | Susceptible/population | – |
| Infecting | Auxiliary | People/day | Infected contacts*fraction susceptible*contact success rate | – |
| Recovering | Auxiliary | People/day | Infected/duration | – |
| Contact success rate | Constant | Fraction | 0.1 | – |
| Infected constant | Auxiliary | People/day | Contact rate*Infection | – |
| Contact rate | Constant | People/person/day | 10 | – |
| Duration | Constant | Days | 14 | – |
| Initial infection | Constant | Person | 1 | – |
| Transmission rate | Auxiliary | Fraction/day | Reproduction ratio/duration*fraction susceptible | |
| Growth rate | Constant | Fraction/day | 0.28 | – |
| Deaths | Level | People | Dying | 0 |
| Dying | Auxiliary | People/day | Infected*fatality rate*infected duration | – |