'SimBIID_runs' object with n = 1 replicates.

Output at final time point:
# A tibble: 1 x 8
  completed     t     S     I     R S_inc I_inc R_inc
      <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl> <dbl>
1         0    20   117     1     2     0     3     2
