Table 1 Web interface and model parameters of CovidSIM Version 1.0
From: The COVID-19 pandemic preparedness simulation tool: CovidSIM
Parameter name on the CovidSIM interface | Parameter | Unit | Default value |
|---|---|---|---|
Population: | |||
Population size | N | million | 100 |
Number of initial infections | LInit | individuals | 1 |
Infections from outside of the population | λExt | per day | 1 |
Durations: | |||
Latency period average duration | DE=nE/ε | days | 4 |
Number of latency stages | nE | 16 | |
Prodromal period average duration | DP=nP/φ | days | 1 |
Number of prodromal stages | nP | 16 | |
Final infectious period average duration | DI=nI/γ | days | 10 |
Number of final infectious stages | nI | 16 | |
Severity: | |||
Infections which will lead to sickness | fSick | % | 58 |
Sick patients seek medical help | fConsult | % | 40 |
Sick patients are hospitalized | fHosp | % | 2 |
Hospitalized cases need intensive care | fICU | % | 2 |
Sick patients die from the disease | fDead | % | 2 |
Contagiousness: | |||
Annual average of the basic reproduction number | \(\bar R_{0}\) | 4 | |
Amplitude of the seasonal fluctuation of R0 | a | % of \(\bar R_{0}\) | 0 |
Day when the seasonal R0 reaches its maximum | \(t_{\mathrm {R}_{0_{\max }}}\) | day | 0 |
Relative contagiousness in prodromal period | cP | % | 50 |
Interventions: | |||
General contact reduction | pDist(t) | % | 50 |
General contact reduction begin | \(\phantom {\dot {i}\!}t_{\text {Dist}_1}\) | day of | 0 |
General contact reduction duration | \(\phantom {\dot {i}\!}t_{\text {Dist}_2}-t_{\text {Dist}_1}\) | day | 0 |
Probability that a sick patient is isolated | fIso | % | 0 |
Maximum capacity of isolation units | Qmax | abs. number | 0 |
Contact reduction for cases in home isolation | pHome | % | 0 |
Begin of case isolation measures | \(\phantom {\dot {i}\!}t_{\text {Iso}_1}\) | day | 0 |
Duration of case isolation measures | \(\phantom {\dot {i}\!}t_{\text {Iso}_2}-t_{\text {Iso}_1}\) | day | 0 |