Table 1.: Epidemiologic, Microbiologic and Serologic Characteristics of HUS Patients

Case Season Sexa Age Prodromes Bloody Diarrhea Source of Contaminationb STEC Isolation α-LPS α-LPSc,d
IgM  IgG
1 Summer F 3y 2m 3 days - NI - O111 0.58  1.70
2 Summer M 8 m 21 days + Meat or milk O26:H11 - -  -
3 Spring M 8 m 12 days + NI - - -  -
4 Winter F 2y 9m 2 days + Meat - O111 0.775  3.2
5 Summer F 2y 6m 5 days + Contact with cattle - O157 0.978  1.039
6 Winter F 1y 5m 8 days + Meat or milk - O157 2.90   0.82
7 Spring F 6y 3m 5 days + NI - O157 1.00   0.116
8 Spring M 4y 4m 7 days - Goat milk - O157 3.31   1.50
9 Fall F 1y 2m 7 days - NI - O157 0.472   0.126
10 Summer M 2y 3m 1 day + Meat or milk - O157 0.789   1.004
11 Summer F 1y 7m 3 days - Cheese O165:H- - -      -
12 Summer M 1y 7m 2 days + Meat or milk - O157 0.462   0.789
13 Winter F 3y 10m 5 days + Contact with cattle O157:H7 NT NT    NT

a F, female; M, male
b NI, not identified
c ELISA absorbance values measured at 492 nm ; NT, not tested; all sera were diluted 1:500 in PBS-Tween.
d Abs values for positive 1:500 diluted sera controls α-LPS O26 : IgM 1.6; IgG 2.1; α-LPS O111: IgM 0.58; IgG 1.7; α-LPS O157: IgM 2.2; IgG 1.6.