Table 3.

Clinical characteristics of STEC-infected patients and Stx2 detected in their sera.

Pt.	Age (y)	Sex	Clinical Symptoms	E. coli Serotype a	Detection of stx Genes in Feces	Stx2 (ng/mL)
1	5.3	F	Diarrhea	nd b	stx2+ by PCR-based rev dot blot, RT-PCR	2.99 ± 0.20
2	0.2	M	Bloody diarrhea	O157	stx2+ by PCR-based rev dot blot	0.40 ± 0.02
3	0.8	M	diarrhea, proteinuria	O157	stx2+ by PCR-based rev dot blot	4.89 ± 0.77
4	5.6	M	diarrhea, proteinuria	O127	stx2+ by PCR-based rev dot blot, RT-PCR	3.50 ± 0.75
5	6.3	M	Proteinuria	O127	stx2+ by RT-PCR	3.57 ± 0.04

^a E. coli serotypes in patients 2, 3, and 4 were determined by stool cultures and serotype analysis, in patient 5 by antibody to LPS; ^b not determined.