Phylogenetically related Argentinean and Australian Escherichia coli O157 isolates are distinguished by virulence clades and alternative Shiga toxin 1 and 2 prophages. - Mellor GE; Sim EM; Barlow RS; D'Astek BA; Galli L; Chinen I; Rivas M; Gobius KS (Applied and environmental microbiology, 2012)