Enteropathogenic Escherichia coli O157 Strains from Brazil
Figure 1. Clonal phylogeny of Escherichia coli strains of various pathotypes inferred from distances at synonymous sites in sequences of 13 concatenated loci (mutS was not included) by using the neighbor-joining algorithm. This consensus tree has numbers at each node, representing the percentage of bootstrapped trees in which the node was observed. SC373/2 and RN587/1 are the two O157 strains from Brazil. The other pathogenic strains included in the figure are described in Reid et al. (9). The serotype of each strain (when available) appears to the right of its designation. HNT denotes a nontypeable flagellar antigen.