On average, each infected person...

Infects a new person every N days (in the beginning)
Recovers in N days
Loses immunity in N years

R0 is
But R is changed by...
Susceptible population
Personal Hygiene

Physical Distancing

Isolating Cases

Quarantining Contacts

Deep Cleaning

Face Masks

Summer

Vaccinations


R is now Hospital capacity at N%

Simulate N years...

...in N seconds