Calculate final size of outbreak: the total number of infections in each group

Usage

getFinalSize(
  vacTime,
  vacPortion,
  popSize,
  R0,
  recoveryRate,
  relContact,
  contactWithinGroup,
  relSusc
)

vacTime: time after first case at which all vaccinations are delivered
vacPortion: fraction of each population vaccinated
popSize: size of each population
R0: overall basic reproduction number
recoveryRate: inverse of mean infectious period (same time units as vacTime)
relContact: relative overall contact rate of each group
contactWithinGroup: fraction of each group's contacts that are in-group vs out-group
relSusc: relative susceptibility to infection per contact of each group