Skip to main content
. 2007 Jul;71(3):230–235.

Table I.

Serotype, virulence genes, and sources of non-O157 Shiga toxin-producing Escherichia coli (STEC) recovered from feces of cattle sampled from 84 pens in 21 Alberta feedlots in 2004

Virulence genes
Serotype stx1 stx2 hlyA eae No. of pensa No. of feedlotsa Month (no. of isolates, pen typeb)
O2:H27 + + 2 2 March (2, SOF)
November (1, PS)
O113:H21 + 2 2 April (1, SOF)
December (1, SOF)
O165:H25 + + 1 1 April (1, SOF)
O?:NM + + 1 1 April (1, SOF)
O?:H5 + 1 1 March (1, PS)
O?:H29 + 1 1 April (1, SOF)
O145:NM + + + 1 1 June (1, PS)
O15:H16 + 1 1 September (1, SOF)
O51:NM + 1 1 November (1, SOF)
O?:H16 + 1 1 October (1, PS)
O139:H19 + + + 1 1 December (1, SOF)
(O111) + NA + 1 1 March (1, SOF)

NA — not available: the isolate could not be recovered for serotyping and hlyA testing after storage but had been positive for the stx2 and eaeO111 genes.

a

Multiple isolates were recovered from 2 pens in 2 different feedlots.

b

At each feedlot visit, the pen shortest on feed (SOF) and the pen closest to slaughter (within 2 wk preslaughter [PS]) were sampled.