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Table 2 Serotypes, stx subtypes and virulence genes of 126 beef cattle STEC isolates

From: High prevalence of non-O157 Shiga toxin-producing Escherichia coli in beef cattle detected by combining four selective agars

Serotype No. of isolates stx subtypes Intimin gene Adherence-related genes Other virulence-associated genes Plasmid genes
stx 1 stx 2 eae iha saa paa cnf1 cnf2 subA ehxA espP katP
O5(O70):H31 a 16 stx 1a stx 2c + + + +
O5(O70):H31 a 1 stx 1a stx 2d + + + +
O8: H19 6 stx 1a stx 2a + + + +
O15:H29 1   stx 2d +
O22:H16 2   stx 2d +
O65:H19 1   stx 2d +
O65:H19 3   stx 2c +
O74:H8 1 stx 1a stx 2d + + + +
O76:H21 1   stx 2d +
O81:H29 1   stx 2d +
O81:H31 4 stx 1a stx 2a + + + +
O81:H31 1 stx 1a stx 2a + +
O81:H31 1   stx 2a + + + +
O81:H31 3 stx 1a stx 2c + + + +
O81:H31 1 stx 1a stx 2c + + +
O81:H31 14 stx 1a stx 2d + + + +
O81:H31 1 stx 1a stx 2d + + + + +
O81:H31 1 stx 1a stx 2d + + + + +
O84:H2 28 stx 1a   + + + + +
O84:H2 1 stx 1a   + + + +
O84:H2 1 stx 1a   + + + +
O96:H29 3   stx 2d +
O116:H10 1 stx 1a stx 2a + + + +
O145:H12 1 stx 1a   + + +
O165:H8 1   stx 2a + + + + +
O166:H29 1   stx 2d + + +
O166:H29 1   stx 2d +
O177: HNT 7   stx 2c + + + + +
ONT:H8 22   stx 2a + + + + +
Total 126 1 b 3 b 37 125 74 30 1 1 23 111 111 7
  1. a, These isolates were agglutinated with both O5 and O70 antisera
  2. b, Number of stx1 or stx2 subtypes identified