Volume 18, Number 10—October 2012
Dispatch
Scarlet Fever Epidemic, Hong Kong, 2011
Emma Y.Y. Luk
, Janice Y.C. Lo, Amy Z.L. Li, Michael C.K. Lau, Terence K.M. Cheung, Alice Y.M. Wong, Monica M.H. Wong, Christine W. Wong, Shuk-kwan Chuang, and Thomas Tsang
, Janice Y.C. Lo, Amy Z.L. Li, Michael C.K. Lau, Terence K.M. Cheung, Alice Y.M. Wong, Monica M.H. Wong, Christine W. Wong, Shuk-kwan Chuang, and Thomas Tsang
Table 2
Clinical characteristics of patients with scarlet fever who had medical complications, Hong Kong, January–July 2011*
| Characteristic | Case-patient no. |
||||||||
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | |
| Patient age, y/sex | 14/M | M/11 | 8/F | 7/F | 5/M | 6/M | 3/M | 2/F | 12/M |
| Month of illness onset | April | April | April | May | June | June | July | July | July |
| Days from symptom onset to hospital admission | 1 | 4 | 7 | 7 | 4 | 10 | 1 | 1 | 0 |
| Complications | TSS | Parapharyngeal abscess | TSS | TSS | TSS | Septicemia | TSS | TSS | Septicemia |
| Intensive care unit admission | No | No | Yes | Yes | Yes | Yes | No | Yes | No |
| Concomitant chickenpox infection | No | No | No | No | Yes | No | Yes | No | Yes |
| Recovered | Yes | Yes | Yes | No (died) | No (died) | Yes | Yes | Yes | Yes |
| S. pyogenes isolates | Throat | Throat | None | Blood, lower limb blister fluid | Blood and pus | Blood | Throat | Throat | Blood and pus |
| emm type | NA | NA | NA | emm12 | emm1 | emm12 | NA | NA | emm12 |
| 48-kb insert | NA | NA | NA | + | + | + | NA | NA | – |
| Virulence geneprofile (speA¸speB, speC, speF, speH, ssa) | NA | NA | NA | −++−++ | ++++−+ | −+++++ | NA | NA | − + + + + − |
*All case-patients were healthy before infection. TSS, toxic shock syndrome; NA, not available; +, positive; –, negative.
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