TABLE 4.

Genotypic and phenotypic characteristics of EHEC O157 bovine strainsa

StrainSerotypeQEDL933 antiterminator geneQ21 antiterminator genestx2 phage inductionStx production
34O157:H7+++
52O157:H7+++
254O157:H7+++
R4O157:H7+++
R67O157:H7+++
F67O157:H7+++
321O157:H7+++
320O157:NM+++
318O157:NM++
319O157:NM++
4979O157:H7++
  • a +, present; −, absent.