Consistency of type of Stx-associated bacteriophage and stx in SBI genotypes in clinical and bovine strains.

aNumbers of isolates with the corresponding Stx-associated bacteriophage sequences in the insertion site. Numbers in parentheses indicate the isolate also positive for the expected stx. Association of the Stx-associated bacteriophage and stx2 gene variant with the BBG and CG strains was analyzed using the Fisher’s exact test (P≤0.05).bTwo strains of AWY12 and single strain of AWY2 had Stx2-associated bacteriophages inserted into both argW and wrbA, and our data cannot determine whether stx2a is carried by one or both of these bacteriophages.cStx-associated bacteriophage differences among SBI genotypes identified in earlier studies [5], [10].dStx-associated bacteriophage differences among SBI genotypes identified in this study.