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. 2011 Jan 14;77(6):2035–2041. doi: 10.1128/AEM.02089-10

TABLE 2.

Characterization of the 28 E. coli strains isolated from raw-milk cheeses

Strain Isolationa Serotypeb Presence off:
stx (subtypec) eae (type) Hemo- lysise EHEC-hlyA katP espP nleA pagC ent efa1 saa EAF bfpA
STEC
33.1 C O2:H27 + (stx2a) +
162.5 C O2:H27 + (stx2a) +
246.3 C O2:H27 + (stx2a) +
104.5 C O8:H19 + (stx2a + stx2d) E-hly +
303.1 C O8:H19 + (stx2ND)
170.2 I, C O26:H11 + (stx1a) +1) E-hly + + + + + +
238.2 I O26:H11 + (stx1a) +1) E-hly + + + + + +
129.2 I O26:[H11] + (stx1a) +1) E-hly + + + + + +
245.3 I O26:[H11] + (stx1a) +1) E-hly + + + + + +
260.3 I O26:[H11] + (stx1a) +1) E-hly + + + + + +
283.4 I O26:[H11] + (stx1a) +1) E-hly + + + + + +
277.2 I O26:[H11] + (stx1a + stx2a) +1) E-hly + + + + +
161.2 C O91:H10 + (stx2d)
282.2 C O128ab:[H2] + (stx1c) E-hly +
124.1 C O166:[H28]d + (stx2b + stx2c)
91.1 C O174:H2 + (stx1a) E-hly + + + +
299.3 C O175:H16 + (stx2a) E-hly + +
311.2 C O175:H16 + (stx2d)
381.1 C O178:H19 + (stx2c) +
225.4 C ONT:H10 + (stx1c) +
47.1 C Or:H10 + (stx1c) +
180.E C Or:H10 + (stx1c) +
Non-STEC
04.2 I O26:[H11] +1) α-hly + + +
315.2 I O26:[H11] +1) α-hly + + +
306.D I [O26]:[H11] +1) α-hly + + +
355.2 I O26:H32
167.2 I O103:H25 +2/θ) E-hly + + + +
275.1 C O133:H29d
a

C, colony hybridization; I, immunomagnetic separation.

b

Or, O rough. O and H types in brackets represent strains whose serotype could be determined by real-time PCR only and not by conventional serotyping.

c

stx subtypes refer to prototype organisms (GenBank accession numbers in parentheses) as follows: stx1a, O157-EDL933 (M19473); stx1c, O174-DG131-3 (Z36901); stx2a, O157-EDL933 (X07865); stx2b, O118-EH250 (AF043627); stx2c, O157-E32511 (M59432); stx2d, O73-C165-02 (DQ059012); ND, not determined.

d

These strains tested positive for ihp1O145 by real-time PCR.

e

E-hly and α-hly, EHEC hemolytic and alpha-hemolytic phenotypes on red blood cell agar, respectively.

f

+, present; −, absent.