COVID19 Never Grows Exponentially – Professor Michael Levitt

Part 1: Exponential Growth is Terrifying

This is my first podcast and they will improve. This is Part 1 and it describes how COVID may grow exponentially and how we flatten the growth curve.

Part 2: Curve Fitting for Understanding

This is Part 2. Fitting viral growth data with simple mathematical functions can give important insights into how epidemics will grow. Here we illustrate two commonly used growth curves, the Sigmoid Function and the Gompertz Function. While superficially similar, they are really very different.

Part 3: COVID19 Never Grows Exponentially

Part 3. The total case numbers in South Korea and New Zealand have exponential growth rates that decrease linearly on a log-scale. This is not ever exponential growth.