Neighbour Joining tree displaying the phylogenetic relationship between strains of <i>L</i>. <i>aethiopica</i> and <i>L</i>. <i>tropica</i>.

<p>Bootstrap values >50 are indicated at the nodes. For clarity, only the WHO codes of the strains in population Africa/Galilee and of the four ' intermediate ' strains IL/1959, IN/1979, IL/1980, TR/1995 are given. The partial WHO codes specify the host, the country of origin and the year of isolation: I = insect, SER = <i>P</i>. <i>sergenti</i>, ARA = <i>P</i>. <i>arabicus</i>, ROS = <i>P</i>. <i>rossi</i>, M = mammal, PRV = <i>Procavia</i> (hyrax). If not indicated otherwise, the strains were isolated from human cases. The full WHO codes of all the strains are given in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0131227#pone.0131227.s004" target="_blank">S1 Table</a>. The different colours indicate the clustering based on the Bayesian statistical results at the sub-population level for the population Africa/Galilee; the main populations Turkey/old strains/Palestine and Israel/Palestine are in grey and black, respectively.