TABLE 2.
Core OS types in VTEC and non-VTEC isolates
| Group | Serotype | No. of isolates tested with core type:
|
|||||
|---|---|---|---|---|---|---|---|
| R1 | R2 | R3 | R4 | K-12 | Total no. | ||
| VTEC associated with human disease (human and animal isolates) | O26:H11 | 5 | 5 | ||||
| O55:H7 | 1 | 1 | |||||
| O91:H21 | 4 | 4 | |||||
| O103:H2 | 4 | 4 | |||||
| O111:H− | 12 | 12 | |||||
| O111:H8 | 3 | 3 | |||||
| O113:H4 | 1 | 1 | |||||
| O113:H21 | 3 | 3 | |||||
| O145:H− | 3 | 1 | 4 | ||||
| O145:H8 | 1 | 1 | |||||
| O157:H7 | 14 | 14 | |||||
| O157:H− | 4 | 4 | |||||
| Total (%) | 7 (12.5) | 0 (0) | 48 (85.7) | 0 (0) | 1 (1.8) | 56 (100) | |
| VTEC not associated with human disease (animal isolates) | O6:H34 | 1 | 1 | ||||
| O40:H8 | 1 | 1 | |||||
| O49:H− | 1 | 1 | |||||
| O74:H52 | 1 | 1 | |||||
| O82:H8 | 1 | 1 | |||||
| O85:H− | 1 | 1 | |||||
| O112:H2 | 1 | 1 | |||||
| O171:H2 | 1 | 1 | |||||
| O172:H− | 1 | 1 | |||||
| Total (%) | 1 (11.1) | 0 (0) | 6 (66.7) | 1 (11.1) | 1 (11.1) | 9 (100) | |
| All VTEC | Total (%) | 8 (12.3) | 0 (0) | 54 (83.1) | 1 (1.5) | 2 (3.1) | 65 (100) |
| Non-VTEC of VTEC serogroups isolated from animals and meats | O2:H5 | 1 | 1 | ||||
| O2:H10 | 1 | 1 | |||||
| O6:H4 | 1 | 1 | |||||
| O8:H21 | 1 | 1 | |||||
| O15:H45 | 1 | 1 | |||||
| O64:H7 | 1 | 1 | |||||
| O112:H8 | 1 | 1 | |||||
| O117:H9 | 1 | 1 | |||||
| O156:H25a | 1 | 1 | |||||
| O157:H7a | 2 | 2 | |||||
| O157:H12 | 1 | 1 | |||||
| O157:H16 | 1 | 1 | |||||
| O157:H19 | 1 | 1 | |||||
| O157:H25 | 1 | 1 | |||||
| O157:H38 | 1 | 1 | |||||
| O157:H45 | 1 | 1 | |||||
| O157:H− | 1 | 2 | 3 | ||||
| Total (%) | 10 (50.0) | 2 (10.0) | 8 (40.0) | 20 (100.0) | |||
a
Isolates of O156:H25 and O157:H7 were probably VTEC isolates that had lost their toxin genes.