Volume 10, Number 6—June 2004
Letter
Diagnostic Criteria during SARS Outbreak in Hong Kong
Louis Y. Chan*, Nelson Lee†
, Paul K.S. Chan†, Alan Wu†, Timothy H. Rainer†, Philip K.T. Li*, Hong Fung*, and Joseph JY Sung†
, Paul K.S. Chan†, Alan Wu†, Timothy H. Rainer†, Philip K.T. Li*, Hong Fung*, and Joseph JY Sung†
Table
SARS contact history and demographic and initial laboratory parameters in seropositive and seronegative patients
| Seropositive patients, n = 353 (%) | Seronegative patients, n = 2 (%) | p value or OR (95% CI)a | |
|---|---|---|---|
| Demographic data | |||
| Age | 40.9 ± 17.2 | 51.2 ± 24.3 | 0.008 |
| Healthcare workers | 193 (54.7) | 2 (9.1) | 12.1 (2.8 to 52.4) |
| Non-HCW | 160 (45.3) | 20 (90.9) | |
| Laboratory parameters on admission | |||
| Total leukocyte count (x 109/L) | 6.2 ± 3.2 | 9.4 ± 7.4 | <0.001 |
| Lymphocyte count (x 109/L) | 1.0 ± 0.4 | 1.2 ± 0.8 | 0.027 |
| Level of contact | |||
| Definite close contact | 322 (91.2) | 7 (31.8) | 22.3 (8.4 to 58.7) |
| Possible contact | 31 (8.8) | 15 (68.2) | |
| Possible contact plus lymphopenia | |||
| Lymphocyte < 0.8 x 109/L | 13 (76.5) | 4 (23.5) | |
| Lymphocyte < 1.0 x 109/L | 21 (72.4) | 8 (27.6) | |
| Venue of contact | |||
| Hospital | 290 (82.2) | 8 (36.4) | 8.1 (3.2 to 20.0) |
| Community | 63 (17.8) | 14 (63.6) | |
aOR, odds ratio; CI, confidence interval
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