2020, Paper, "We provide an elementary mathematical description of the spread of the coronavirus. We explain two fundamental relationships: How the rate of growth in new infections is determined by the “effective reproductive number”; and how the effective reproductive number is affected by social distancing. By making a key approximation, we are able to formulate these relationships very simply and thereby avoid complicated mathematics. Consequently, our description requires no more than basic high-school algebra."
Non-HKS Faculty Author Website - Elon Kohlberg