TABLE 2.
Age distribution and other characteristics of patients with STEC infections diagnosed at St. Olavs Hospital during the 1996-2011 period
| Age group (yr) | No. (%) of patients: |
Positive rate | Sex (no.) |
Clinical presentation in patients with STEC (no.): |
||||||
|---|---|---|---|---|---|---|---|---|---|---|
| With STEC | Tested | Female | Male | HUSa | BDb | Diarrhea | Asymptomaticc | NDd | ||
| <2 | 50 (36.3) | 6,860 (54.2) | 0.73 | 25 | 25 | 6 | 5 | 25 | 5 | 9 |
| 2–4 | 32 (23.2) | 1,301 (10.3) | 2.46 | 17 | 15 | 4 | 0 | 15 | 6 | 7 |
| 5–9 | 9 (6.5) | 344 (2.7) | 2.62 | 2 | 7 | 1 | 1 | 1 | 2 | 4 |
| ≥10 | 47 (34.0) | 4,146 (32.8) | 1.13 | 25 | 22 | 0 | 3 | 27 | 7 | 10 |
| Total | 138 (100.0) | 12,651 (100.0) | 1.09 | 69 | 69 | 11 | 9 | 68 | 20 | 30 |
a
HUS, hemolytic uremic syndrome.
b
BD, bloody diarrhea.
c
Some of the strains were from persons tested in outbreak investigations.
d
ND, no clinical information. Some of these strains were from outbreak investigations.