description: ' The following measures each impact the ability of the disease to spread. Try changing some parameters to see how they contribute to the R-Value of the disease. This calculator assumes an activity reduction of 41% from November 02 (this corresponds to the lockdown in March/April). Our simulations show that this is sufficient to stop the exponential growth and that R is ca. 1' baseValues: - base: 0.995 additiveGroups: Schools: - current (100%): 0.0* - 50%: -0.102 - 0%: -0.134 - cloth masks: -0.092 - cloth masks & 50%: -0.121 Day care: - current (100%): 0.0* - 50%: -0.013 - 0%: -0.017 Universities: - current (20%): 0.0* - 0%: -0.0 Errands: - current (59%): 0.0* - 0%: -0.02 Shop: - current (59%): 0.0* - 0%: -0.0 Work: - current (59%): 0.0* - 75%: 0.046 - 50%: -0.001 - 25%: -0.036 - 0%: -0.052 - ffp masks: -0.042 Leisure: - current (59%): 0.0* - 50%: -0.067 - 0%: -0.259 - curfew 19-6: -0.095 - curfew 21-6: -0.036 - curfew 23-6: -0.011 - 50% & curfew 19-6: -0.138 - 50% & curfew 21-6: -0.112 - 50% & curfew 23-6: -0.081 Other education: - current (100%): 0.0* - 50%: -0.02 - 0%: -0.02 optionGroups: Tracing (see remarks): - current (capacity-restricted_probability-60%_delay-4d:): 1.0* - capacity-restricted_probability-60%_delay-2d: 1.0 - capacity-restricted_probability-90%_delay-2d: 0.999 - capacity-restricted_probability-90%_delay-4d: 1.0 - capacity-infinity_probability-60%_delay-2d: 0.817 - capacity-infinity_probability-60%_delay-4d: 0.859 - capacity-infinity_probability-90%_delay-2d: 0.762 - capacity-infinity_probability-90%_delay-4d: 0.803 notes: - "Capacity infinity for contact tracing means that current new infection numbers can be handled. A delay of 4 days seems realistic for the current situation." - "The tracing probability means the probability that a contact is successfully traced." - "Here are some (R,date) combinations for when contact tracing will become relevant again: (1,apr/may), (0.9, jan/feb), (0.8, jan), (0.75, dec/jan)." - "The runs used for the calculation can be found at https://covid-sim.info/2020-11-12/interventions ."