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Volume 11, Number 11—November 2005
Research
Neutralizing Antibody Response and SARS Severity
Mei-Shang Ho*, Wei-Ju Chen*, Hour-Young Chen†, Szu-Fong Lin†, Min-Chin Wang†, Jiali Di†, Yen-Ta Lu‡, Ching-Lung Liu‡, Shan-Chwen Chang§, Chung-Liang Chao¶, Chwan-Chuen King§, Jeng-Min Chiou*, Ih-Jen Su#, and Jyh-Yuan Yang†
Table 4
Seronegative rate of SARS-CoV patients, by source of infection*
| Source of infection | Total no. | Seronegative rate, n (%) |
|---|---|---|
| Known | 8/212 (3.7) | |
| Hospital-associated | ||
| Patient† | 81 | 3/44 (6.8) |
| Patient's close contacts | 55 | 1/43 (2.3) |
| Healthcare worker | 82 | 2/71 (3.1) |
| Other worker‡ | 27 | 1/19 (4.0) |
| Family and social contacts | 43 | 1/35 (2.9) |
| Unknown | 23/51 (45.1) | |
| Imported | 22 | 11/20 (55.0) |
| Indigenous | 36 | 12/31 (38.7) |
*Seronegative rates of the 2 groups with known and unknown source of infection were significantly different (χ2, p<0.10–7).
†In-hospital patients experiencing nosocomial SARS infection.
‡Including laundry workers, cleaners, clerks, and ambulance drivers.
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