TABLE 2.
Serotypes, virulence markers, and year of isolation of STEC strains isolated in São Paulo, Brazil
| Serotype (no. of strains) | stx gene type | Presence of (no. of strains):
|
Presence of EHEC Hly (no. of strains) | Yr of isolation (no. of strains) | ||
|---|---|---|---|---|---|---|
| eae | EHEC hlyA | astA | ||||
| O26:H11 (4) | 1 | + | + | + | + | 1981, 1985, 1987, 1997 |
| O55:H19 (1) | 1 | − | − | − | − | 1984 |
| O93:H19 (1) | 1 + 2 | − | + | − | + | 1984 |
| O111:NM (13) | 1 | + | + (3) | + (12) | + (3) | 1978 (3), 1980 (2), 1981, 1983, 1985, 1986, 1987, 1988 (2), 1993 |
| O111:H8 (7) | 1 | + | + (3) | + (6) | + (2) | 1976, 1977, 1979, 1985, 1988, 1993, 1998 |
| O111:H11 (1) | 1 | + | − | + | − | 1981 |
| O118:H16a (1) | 1 | + | + | + | + | 1989 |
| O157:H7a (1) | 2 | + | + | + | + | 1990 |
a
Isolated from adults.