Volume 22, Number 11—November 2016
Dispatch
Group B Streptococcus Serotype III Sequence Type 283 Bacteremia Associated with Consumption of Raw Fish, Singapore
Shermin Tan
, Yijun Lin, Kelly Foo, Han Fang Koh, Charlene Tow, Yiwen Zhang, Li Wei Ang, Lin Cui, Hishamuddin Badaruddin, Peng Lim Ooi, Raymond Tzer Pin Lin, and Jeffery Cutter
, Yijun Lin, Kelly Foo, Han Fang Koh, Charlene Tow, Yiwen Zhang, Li Wei Ang, Lin Cui, Hishamuddin Badaruddin, Peng Lim Ooi, Raymond Tzer Pin Lin, and Jeffery Cutter
Table 1
Characteristics of case-patients and controls in group B Streptococcus outbreak investigation, Singapore, 2015*
| Characteristic | No. (%) case-patients, n = 40 | No. (%) controls, n = 58 | p value |
|---|---|---|---|
| Age group, y | <0.0005 | ||
| 0–4 | 0 | 0 | |
| 5–14 | 0 | 1 (1.7) | |
| 15–24 | 0 | 5 (8.6) | |
| 25–34 | 0 | 9 (15.5) | |
| 35–44 | 6 (15.0) | 13 (22.4) | |
| 45–54 | 8 (20.0) | 9 (15.5) | |
| 55–64 | 7 (17.5) | 11 (19.0) | |
| >65 | 19 (47.5) | 5 (8.6) | |
| Unknown |
0 |
5 (8.6) |
|
| Mean age, y | 61.5 | 44.8 | |
| Median age, y | 61.5 | 44.0 | |
| Age range, y |
33–68 |
14–95 |
|
| Sex | 0.038 | ||
| M | 21 (52.5) | 18 (31.0) | |
| F |
19 (47.5) |
40 (69.0) |
|
| Ethnicity | 0.527 | ||
| Chinese | 36 (90.0) | 47 (81.0) | |
| Malay | 3 (7.5) | 6 (10.3) | |
| Indian | 0 | 2 (3.4) | |
| Other |
1 (2.5) |
3 (5.2) |
|
| Housing type† | 7 (17.5) | 10 (17.2) | 0.991 |
| 3-room flats and smaller‡ | 17 (42.5) | 22 (37.9) | |
| 4-room HDB flats | 8 (20.0) | 13 (22.4) | |
| Executive/5-room HDB flats | 4 (10.0) | 7 (12.1) | |
| Private housing |
4 (10.0) |
6 (10.3) |
|
| Concurrent illness | <0.0005 | ||
| No | 11 (27.5) | 40 (69.0) | |
| Yes | 29 (72.5) | 18 (31.0) | |
| Diabetes mellitus | 15 (37.5) | 5 (8.6) | 0.001 |
| Cancer | 3 (7.5) | 0 | 0.065 |
| Cardiovascular disease | 22 (55.0) | 13 (22.4) | 0.001 |
| Renal disease | 5 (12.5) | 0 | 0.010 |
| Liver disease | 3 (7.5) | 0 | 0.065 |
| Gastrointestinal disease | 1 (2.5) | 0 | 0.408 |
| Respiratory disease | 3 (7.5) | 0 | 0.065 |
| Blood disease | 2 (5.0) | 1 (1.7) | 0.565 |
*HDB, Housing Development Board.
†Housing type was used as a proxy for socioeconomic status; >80% of the population in Singapore live in public housing managed by the HDB.
‡HDB flats are considered public housing by the HDB.
Page created: October 19, 2016
Page updated: October 19, 2016
Page reviewed: October 19, 2016
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