Figure 1. Identified pulsotypes among Y. enterocolitica isolates.

Similarities (%) between restriction patterns were calculated using the Dice's index and are shown as the numbers close to nodes. The data were sorted using the UPGMA method. For construction of this dendrogram, 41 Y. enterocolitica pulsotypes with similarity lower than 85% were selected from a dendrogram containing all 110 isolates (Fig. S1). Susceptibility to colicin F_Y is shown in the right panel, followed by additional strain characteristics. Colicin F_Y titers are shown as the reciprocal exponent of the highest four-fold dilution causing clear (light grey) and turbid (dark grey) zones of inhibition. Subspecies: P =  palearctica, E =  enterocolitica. *Serotypes O:1 and O:2 have been combined to O:3 serotype according to [1].