Table 1.
Baseline characteristics of primary Shigella cases (n=102) and related contacts (n=337) in high risk households, Amsterdam, The Netherlands 2002–2009
| Characteristics | Primary cases (n=102) | Household contacts (n=337) | p value | |||
|---|---|---|---|---|---|---|
| |
|
n |
% |
n |
% |
|
| Age group |
|
|
|
|
|
|
| |
0–3 |
20 |
20 |
48 |
14 |
|
| |
4–5 |
15 |
15 |
19 |
9 |
|
| |
>6 |
67 |
66 |
260 |
77 |
0.030 |
| Gender |
|
|
|
|
|
|
| |
female |
53 |
52 |
171 |
51 |
|
| |
Male |
49 |
18 |
166 |
49 |
0.802 |
| Country of birth |
|
|
|
|
|
|
| |
Netherlands |
30 |
29 |
91 |
27 |
|
| |
Western, other |
3 |
3 |
6 |
2 |
|
| |
Non-western |
70 |
68 |
236 |
71 |
|
| Diarrhoea |
|
|
|
|
|
|
| |
Yes |
102 |
100 |
87 |
26 |
|
| |
No |
0 |
0 |
228 |
68 |
|
| |
Unknown |
0 |
0 |
22 |
7 |
|
| Shigella isolated |
|
|
|
|
|
|
| |
Yes |
102 |
100 |
25 |
7 |
|
| |
No |
0 |
0 |
312 |
86 |
|
| Shigella serotype |
|
|
|
|
|
|
| |
S. sonnei |
57 |
56 |
15 |
4 |
|
| |
S. flexneri |
36 |
35 |
8 |
2 |
|
| |
S. boydii |
6 |
6 |
2 |
1 |
|
| |
S. dysenteriae |
3 |
3 |
0 |
0 |
|
| |
Negative |
0 |
0 |
312 |
93 |
|
| Months reported |
|
|
|
|
|
|
| |
Dec-Jan |
9 |
9 |
46 |
14 |
|
| |
Feb-Mar |
6 |
6 |
15 |
4 |
|
| |
Apr-May |
9 |
9 |
25 |
7 |
|
| |
Jun-Jul |
8 |
8 |
20 |
6 |
|
| |
Aug-Sep |
51 |
50 |
168 |
50 |
|
| |
Oct-Nov |
19 |
19 |
63 |
19 |
|
| Hospitalised |
|
|
|
|
|
|
| |
No |
22 |
22 |
1 |
0 |
|
| Yes | 80 | 78 | 336 | 100 | ||