Fig. 1

Phylogenetic structure and transmission. a Time-scaled phylogeny of the C. fetus population constructed from the core genome alignment (980 genes). Branches are colored according the most probable ancestral host. Vertical color strips are colored according to host type and to BAPS clustering, respectively. b Bar plot showing the distribution of hosts in each BAPS cluster, bar width is proportional to the percentage of strains present at each cluster. c Asymmetric graph showing significant host-to-host transmissions. Arrows redness is proportional to the transmission rate and the width is proportional to the Bayes factor