TABLE 2.

Complex STEC serotypes isolated in longitudinal flock studies

SerotypeaPreviously reportedbNo. of isolates (no. of sheep infected)cVirulence factor profiledNo. of infected sheep
stx1stx2eaeehxAEwesLambs
<6 wk oldPreweaningPostweaning
O5:HYes29 (21)+++9363
O8:H19Yes1 (1)+++1
O21:H21Yes1 (1)+++1
O26:HYes2 (2)+++2
O26:H11Yes3 (3)+++3
O26:H21Yes1 (1)+++1
O75:HYes2 (2)+++2
O75:H8Yes26 (20)+++3584
O75:H40Yes3 (2)+++11
O77:HNo1 (1)++1
O77∼H4Yes3 (2)++2
O91:HYes19 (17)+++6362
O103:H38No2 (2)+++1
+++1
O106:H18No1 (1)+++1
O107:HNo1 (1)+++1
O107/O117:HNo1 (1)++1
O110:H28No1 (1)+++1
O117:H21No1 (1)++1
O121:H2No1 (1)+++1
O123:HYes35 (26)+++6866
O123:H11No1 (1)+++1
O128:HYes5 (3)+++11
++++1
O128:H2Yes40 (34)+++310147
O128:H2/H8No2 (2)+++2
O128:H8/H12No1 (1)+++1
O128:HRNo1 (1)++1
O128:HntNo1 (1)+++1
O149:H2No2 (2)+++1
O153:HYes5 (3)+++2
O153:H8Yes1 (1)+++1
O153:H25Yes3 (3)++2
O154:HRNo1 (1)++1
O157:HYes1 (1)+++1
Ont:HYes12 (8)++25
++++1
Ont:H4Yes4 (4)++211
Ont:H5/H51No1 (1)+++1
Ont:H11Yes2 (2)++1
+++1
Ont:H14Yes1 (1)+++1
Ont:H19Yes2 (2)+++11
Ont:H21Yes1 (1)+++1
Ont:H49Yes2 (2)+++11
Ont:HRYes10 (9)++27
OR:HYes2 (2)++1
+++1
OR:H2Yes7 (5)+++221
OR:H4Yes1 (1)+++1
OR:H11Yes1 (1)+++1
OR:HRNo1 (1)++1
O174:H2Yes1 (1)+++1
O174:HRNo1 (1)++1