  We study the impact of contact heterogeneity on epidemic dynamics. A system
characterized by multiple susceptible populations is considered. The
description of the spread of an infectious disease is obtained through the
study of a system of Boltzmann-type equations for the number densities of
social contacts of the introduced compartments. A macroscopic system of
equations characterizing observable effects of the epidemic is then derived to
assess the impact of contact heterogeneity.
