Volume 11, Number 11—November 2005
Research
Neutralizing Antibody Response and SARS Severity
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.