TABLE 2.

Serotypes, virulence markers, and year of isolation of STEC strains isolated in São Paulo, Brazil

Serotype (no. of strains)stx gene typePresence of (no. of strains):Presence of EHEC Hly (no. of strains)Yr of isolation (no. of strains)
eaeEHEC hlyAastA
O26:H11 (4)1++++1981, 1985, 1987, 1997
O55:H19 (1)11984
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.