Speed (1/100-1/20 of the screen)
Infection Radius (0.01-0.2 units)
Shop Rate (1%-50%)
Travel Rate (1%-35%)
Infection Rate (5%-100%)
Recovery Rate (0%-75%)
Fatality Rate (0%-100%)
Quarantine Rate (0%-80%)
Check out "Simulating an Epidemic" by 3b1b