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 | ||