Math meaning

Just in case this is the first article you have ever read on viruses: R is the reproduction number, meaning the average number of infections caused by any ...

The total number of exposures is equal to the total number of infections multiplied by R0. Thus the total number of exposures is 0.75 x population size x 2 = 1.5 x population size. Thanks to Professor Adam Kucharski of the London School of Hygiene and Tropical Medicine, who set this problem. S is a number between 0 and 1 representing the proportion of the population susceptible. During the early stages of this new wave, each infected person exposes the variant to two other people (i.e. Every person exposed to the virus will get infected unless they have already had it, in which case they are immune.