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Table 3 Shiga toxin genotypes of STEC isolates

From: Prevalence, virulence potential, and pulsed-field gel electrophoresis profiling of Shiga toxin-producing Escherichia coli strains from cattle

Shiga toxin gene type Serotype No. of isolates stx variants
stx1c stx2a stx2c stx2g
stx1 only O55 1 1
O84 4 4
O108 5 5
O111 2 2
NT 1 1
Subtotal 13 13
stx2 only O15 3 0 0 3
O109 2 0 0 2
O119 3 3 0 0
O157 18 18 18 0
O169 1 1 0 0
O185 1 1 1 0
Subtotal 28 23 19 5
Both stx1 and stx2 O8 4 3 4 0 0
O157 17 17 17 15 0
NT 1 1 1 0 0
Subtotal 22 21 22 15 0
Total   63 34 45 34 5
  1. NT non-typeable for STEC serogroup