The reproduction ratio, R, is one of the most important numbers in epidemiology. Find out what it means in this very easy introduction.
At the beginning of an epidemic the number of infected people grows exponentially. But why does the number e appear in descriptions of this growth?
This collection of articles looks at some basic concepts in epidemiology and how mathematics plays a central role in understanding how infectious diseases spread.
What is herd immunity and what does it have to do with a number called R?
