.final_size             Calculate the final size of an epidemic
final_size              Final size of an epidemic
lambda_to_r0            Calculate R_0 from transmission rate (lambda)
polymod_uk              Example POLYMOD social contact data for the
                        U.K.
r0_to_lambda            Calculate transmission rate (lambda) from R_0
r_eff                   Calculate R_eff in a heterogeneous population
