Fig. 2

a The network of the communities of A. phagocytophilum haplotypes, as linked to carriers (ticks or vertebrates). Circles (nodes) are haplotypes from ticks or vertebrates, but the labels are included only in nodes representing haplotypes of A. phagocytophilum to improve reading (i.e. labels are not included for ticks and vertebrates). Labels are the number of the cluster obtained in the phylogenetic tree in Fig. 1. The colours represent the communities detected by an agglomerative clustering algorithm and the size of each circle is proportional to its centrality in the network. Large circles are organisms that are well represented in the network (i.e. a carrier in which several haplotypes have been detected, or a haplotype that widely circulates among different carriers). The links among nodes represent relationships among interacting organisms (a haplotype and a carrier) displaying the colour of the community. The width of the link is proportional to the number of interactions among the organisms. The complete network with labels for every node is included in Additional file 2: Figure S1. b A reduced version of the network is included to simplify interpretations. Each circle has the same colour as the set of nodes of each cluster in a. Labels identify the communities that do not necessarily match the phylogenetic clusters. Labels enclosed in rectangles are communities that are disconnected from the giant component of the network