In the simulation: each blob will move every day from their home to multiple places, then come back home.
They will have a chance to contaminate other blobs when within the same place.
Blobs have 3 states :
Susceptible blobs are healthy blobs that can be infected.
Infectious blobs are ill, and can infect susceptible blobs.
After 2 days, infectious blobs are recovered, and can no longer get infected.
The number of cases in 2 days (It+2) is the number of cases today (It), multiplied by the contamination rate (R0) and the suscptible population (S).
As we can see, the lower the contamination rate is, the lower is the spike of the epidemic.
Social distancing is one of the best ways to lower the contamination rate, this is why it is so important.