While degree distributions have been studied extensively to understand their effect on epidemic dynamics, the community structure of networks has generally been ignored. Despite the demonstration that social networks show significant community structure [15, 16, 17, 18] , and that social processes such as homophily and transitivity result in highly clustered and modular networks [19] , the effect of such microstructures on epidemic dynamics has only recently started to be investigated. Most initial work has focused on the effect of small cycles, predominantly in the context of clustering coefficients (i.e. the fraction of closed triplets in a contact network) [20, 21, 22, 23, 24] .