Factors associated with nosocomial SARS-CoV transmission among healthcare workers in Hanoi, Vietnam, 2003

BMC Public Health

Table 1 Hospital A staff by job category – SARS attack rates and serologic profiles, Hanoi, 2003.

			SARS outbreak at Hospital A			Enrollment number of hospital workers (%)
	Staff position	Hospital A employees	SARS cases*	Attack rate^†	Deaths	Completed survey	Serologic specimen	Enrolled workers with positive serologic result^‡
Direct patient care	Physician^§	29	8	27.6	4	17 (58.6)	19 (65.5)	7 (36.8)
	Midwife	10	4	40.0	0	9 (90.0)	8 (80.0)	4 (50.0)
	Nurse^¶ (gen. ward)	19	9	47.4	2	16 (84.2)	19 (100)	10 (52.6) 2 new
	Nurse^¶ (Op.Rm./ICU)	14	1	7.1	0	8 (57.1)	9 (64.3)	0
	Nurse^¶ (other)	7	4	57.1	0	7 (100)	6 (85.7)	4 (66.7)
sub-total		79	26	32.9	6	58 (73.4)	61 (77.2)	26(42.6)
Other clinical staff	Dental	3	0	0	0	3 (100)	1 (33.3)	0
	Laboratory	7	0	0	0	6 (85.7)	3 (42.9)	0
	Pharmacy	2	0	0	0	2 (100)	2 (100)	0
	Radiology	6	2	33.3	0	5 (83.3)	5 (83.3)	1 (20.0)
	Physiotherapy	1	1	100.0	0	1 (100)	1 (100)	1 (100)
sub-total		19	3	15.8	0	15 (79.0)	12 (63.2)	2 (16.7)
Sanitation/Kitchen	Housekeeping	16	4	25.0	0	16 (100)	11 (68.8)	4 (36.4)
	Laundry	7	0	0	0	7 (100)	6 (85.7)	1 (16.7) 1 new
	Kitchen	5	1	20.0	0	4 (80.0)	2 (40.0)	1 (50.0)
	Other	2	1	50.0	0	1 (50)	1 (50.0)	1 (100)
sub-total		30	6	20.0	0	27 (90.0)	20 (66.7)	6 (30.0)
Other non-clinical	Administration	28	0	0	0	22 (78.6)	8 (28.6)	0
	Reception	13	1	9.1	0	10 (76.9)	6 (46.2)	2 (33.3) 1 new
	Security	8	0	0	0	7 (87.5)	6 (75.0)	0
	Maintenance	3	0	0	0	3 (100)	3 (100)	0
	Operations	13	0	0	0	11 (84.6)	8 (61.5)	0
sub-total		65	1	1.5	0	53 (81.5)	31 (47.7)	2 (6.5)
Total	Hospital A staff	193	36	18.7	6	153 (79.3)	124 (64.2)	36 (29.0)

* Refers to cases identified during the course of the outbreak. 4 of the 36 initially identified SARS cases during the outbreak did not have serological confirmation, and they were replaced by the 4 additional, previously unrecognized, seropositive individuals identified during the serosurvey (n = 36).
† The case fatality rates among physicians, nurses from the general ward, and among staff with patient care duties are 50, 22, and 23%, respectively.
‡ Positive serologic results are listed as 'new' if the individual was not recognized as a symptomatic case during the outbreak, but was found to be seropositive during the course of this study.
§ Physicians cases include: Anesthetist/Anesthesiologist (3), General Practitioner (2), Pulmonary Specialist (1), Gynecologist (1), Orthopedic Surgeon (1). Radiologists are included in the 'Radiology' category.
¶ Nurses who were assigned to the general inpatient ward, or the intensive care unit/operating room are indicated, others not specifically assigned are grouped into a single category.

ISSN: 1471-2458