Figure 1.

Phylogenetic tree built on concatenated sequences of the seven multi-locus sequence typing (MLST) loci (3111 bp) of the scheme proposed by Boonsilp and colleagues [17]. Phylogeny was conducted in MEGA 11 using the Neighbor-Joining method and bootstrap values are indicated on the respective branches. The samples are indicated with their ID, which represents a unique identification number of the relative reference strain present in the collection of the Italian Reference Centre for Animal Leptospirosis (IZSLER, Brescia, Italy).