set_mda.RdParameterise a Mass Drug Administration
set_mda(parameters, drug, timesteps, coverages, min_ages, max_ages)a list of parameters to modify
the index of the drug to administer
a vector of timesteps for each round of mda
a vector of the proportion of the target population who receive each round
a vector of minimum ages of the target population for each round exclusive (in timesteps)
a vector of maximum ages of the target population for each round exclusive (in timesteps)