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Model parameters.
| parameter | description |
|---|---|
| β | transmission rate |
| D | population density |
| R | average number of secondary infections caused by one individual |
| σ | rate of spatial decay of infectiousness |
| α | rate of temporal decay of infectiousness |
| ψ | transmission scaling factor (0 for frequency- and 1 for density-dependence) |
| λ | hazard function |
