Numbers of HUS patients from whom stx-negative/eae-positive E. coli or EHEC strains were isolated and serotypes of the isolates.

aNM, nonmotile; NSF, non-sorbitol-fermenting; SF, sorbitol-fermenting.bSerotypes (number of isolates, if more than one, in parenthesis): O121:H19, ONT:H6 (2), ONT:H7; ONT, O antigen not typeable with antisera against E. coli O antigens 1 to 181.cSerotypes (number of isolates, if more than one, in parenthesis): O4:NM, O55:H7, O55:HNT, O70:H8, O73:H18, O76:H19, O91:H21 (2), O98:NM, O104:H4, O112:NM, O113:H21 (2), O119:H2, O121:H19 (2), O128:H2, O136:HNT, O145:H25 (2), O163:H19, O174:H21, Orough:H2, Orough:H11, Orough:NM, ONT:H21, ONT:NM, ONT:HNT; Orough, autoagglutinable strains; HNT, H antigen not typeable with antisera against E. coli H antigens 1 to 56.dIn none of the 483 culture-positive patients stx-negative and stx-positive (EHEC) strains were found in the same stool sample.eFour patients shed two different EHEC serotypes including O157:H7 and O145:NM; O157:H7 and O103:H2; SF O157:NM and O145:NM; O26:H11 and O145:NM (the underlined serotypes which prevailed in the stools and were isolated as the first are included in the table).