Calculate final outbreak size or distribution of a multigroup transmission model for a given basic reproduction number, contact/transmission assumptions, and initial conditions
Estimate the distribution of final outbreak sizes by group using a hybrid model: stochastic simulations for smaller-sized outbreaks and deterministic ordinary differential equation model for "escaped" outbreaks
Ordinary differential equation function for multi-group susceptible-infectious-removed (SIR) model used as "func" argument passed to the ode() function from deSolve package