Table 2.
Distribution of stx subtypes among STEC isolates.
| SEROTYPEs | No. of tested Isolates |
stx1c
n = 92 |
stx1d
n = 92 |
stx2a
n = 134 |
stx2c
n = 134 |
stx2d
n = 134 |
stx subtype combinations |
|---|---|---|---|---|---|---|---|
| O26:H2 | 1 | + | − | + | + | − | stx1c, stx2a, stx2c |
| O26:H2 | 4 | + | − | + | + | + | stx1c, stx2a, stx2c, stx2d |
| O26:H2 | 2 | − | + | − | − | − | stx1d |
| O26:H2 | 2 | − | + | + | + | + | stx1d, stx2a, stx2c, stx2d |
| O26:H2 | 2 | − | − | + | + | − | stx2a, stx2c |
| O26:H2 | 9 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O26:H4 | 1 | − | + | + | − | − | stx1d, stx2a |
| O26:H7 | 1 | − | + | − | − | − | stx1d |
| O26:H7 | 1 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O26:H7 | 1 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O26:H8 | 1 | − | + | + | + | − | stx1d, stx2a, stx2c |
| O26:H8 | 3 | − | − | + | + | − | stx2a, stx2c |
| O26:H8 | 4 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O26:H11 | 2 | − | − | + | + | − | stx2a, stx2c |
| O26:H11 | 1 | − | − | + | + | + | stx2c, stx2d |
| O26:H16 | 1 | − | − | + | + | − | stx2a, stx2c |
| O26:H16 | 1 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O26:H19 | 1 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O26:H19 | 1 | − | − | + | + | + | Stx2a, stx2c, stx2d |
| O26:H21 | 3 | − | − | + | + | − | stx2a, stx2c |
| O26:H21 | 4 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O26:H28 | 1 | + | − | + | + | − | stx1c, stx2a, stx2c |
| O26:H28 | 1 | − | + | − | − | − | stx1d |
| O26:H38 | 1 | − | − | + | + | − | stx2a, stx2c |
| O26:H38 | 1 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O26:H45 | 1 | − | − | + | + | − | stx2a, stx2c |
| O26:HNT | 1 | − | − | + | + | − | stx2a, stx2c |
| O26:HNT | 3 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O45:H2 | 1 | + | + | + | + | + | stx1c, stx1d, stx2a, stx2c, stx2d |
| O45:H8 | 1 | + | − | − | − | − | stx1c |
| O45:H8 | 1 | + | + | − | − | − | stx1c, stx1d |
| O45:H8 | 1 | − | − | + | + | − | stx2a, stx2c |
| O45:H11 | 3 | + | + | + | + | + | stx1c, stx1d, stx2a, stx2c, stx2d |
| O45:H11 | 2 | − | + | + | + | + | stx1d, stx2a, stx2c, stx2d |
| O45:H11 | 3 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O45:H16 | 2 | − | − | + | + | − | stx2a, stx2c |
| O45:H16 | 1 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O45:H19 | 1 | + | − | + | + | + | stx1c, stx2a, stx2c, stx2d |
| O45:H19 | 2 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O45:H21 | 2 | − | − | + | + | − | stx2a, stx2c |
| O45:H28 | 1 | + | + | − | − | − | stx1c, stx1d |
| O45:H38 | 5 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O45:HNT | 2 | + | − | + | + | − | stx1c, stx2a, stx2c |
| O45:HNT | 2 | + | − | + | + | + | stx1c, stx2a, stx2c, stx2d |
| O45:HNT | 5 | − | − | + | + | − | stx2a, stx2c |
| O45:HNT | 3 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O103:H2 | 1 | − | + | − | − | − | stx1d |
| O103:H21 | 1 | − | − | + | + | − | stx2a, stx2c |
| O121:H8 | 4 | − | − | + | + | − | stx2a, stx2c |
| O121:H8 | 2 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O121:H8 | 1 | − | − | + | + | − | stx2c |
| O121:H8 | 1 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O121:H21 | 1 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O121:HNT | 1 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O145:H2 | 1 | − | − | + | + | − | stx2a, stx2c |
| O145:H7 | 1 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O145:H8 | 1 | − | − | + | + | − | stx2a, stx2c |
| O145:H11 | 1 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O145:H19 | 1 | + | − | + | + | − | stx1c, stx2a, stx2c |
| O145:H19 | 12 | − | − | + | + | − | stx2a, stx2c |
| O145:H28 | 2 | − | − | + | + | − | stx2a, stx2c |
| O145:H28 | 1 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O145:HNT | 2 | − | − | + | + | − | stx2a, stx2c |
| O145:HNT | 1 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O157:H2 | 1 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O157:H7 | 7 | − | − | + | + | + | stx2a, stx2c, stx2d |
| O157:H7 | 2 | − | − | + | + | + | stx2c, stx2d |
| O157:H19 | 1 | − | − | + | + | − | stx2a, stx2c |
| O157:H28 | 1 | − | − | + | + | − | stx2a, stx2c |
| TOTAL | 140 | 19 | 17 | 123 | 131 | 75 | |
| % Positive | 20,7 | 18,5 | 91,8 | 97,8 | 56 |
aSerotypes in bold have been identified previously as human pathogens causing diarrhea, bloody diarrhea and HUS.