Investigation of an Escherichia coli O145 outbreak in a child day-care centre - extensive sampling and characterization of eae- and stx 1-positive E. coli yields epidemiological and socioeconomic insight

Table 2 Demographic and clinical data related to cases in STEC O145 outbreak in child day-care centre Norway, 2009 (n = 16)

Case number ^a	Sex	Age (yrs)	Day-care centre department	Duration of shedding (days)	Symptoms ^b	Level of diarrhoea ^c	Date of onset (MM.DD)
1 (index)	m	1	3	57	b, f, m	5	09.28
2	f	3	2	71	n, m	2	10.11
3	m	3	3	14	n	4	09.28
4	m	2	1	23	n, f	1	10.07.
7	f	4	2	6	n	4	09.28
11	m	4	2	18	n	2	09.23 ^d
12	f	2	2	22	n	2	10.07
13	f	1	1	0^e	n, v	4	10.15
16	f	2	1	0^e	n	2	09.23 ^d
5	f	3	3	49	-	-	-
6	f	2	1	0^e	-	-	-
8	m	3	3	22	-	-	-
9	m	3	3	47	-	-	-
10	m	1	1	64	-	-	-
14	m	2	1	0^e	-	-	-
15	m	1	1	15	-	-	-

^a Cases were numbered chronologically in order of identification
^b Symptoms: n = non-bloody diarrhoea, b = bloody diarrhoea, v = vomiting, f = fever, m = malaise
^c 1 = least severe, 5 = most severe
^d Date of onset reported by parents of case 12 and 16 as "during last two weeks of September". Median date of this period 09.23 is presented in this table, and in epidemic curve, Figure 2
^e Duration of shedding recorded as 0 if all follow up tests were negative.

ISSN: 1471-2334