Table 3. Severe acute respiratory (SARS) immunoglobulin G prevalence among healthcare workers with and without SARS in 5 affiliated hospitals.

Affiliated hospital	Healthcare workers with SARS		Healthcare workers without SARS
	No. participants	No. positive (%)	No. participants	No. positive (%)
First	0	0	389	4 (1)
Second	73	63 (86.3)	288	8 (2.8)
Third	17	17 (100)	380	3 (0.8)
Cancer	0	0	371	2 (0.5)
Fifth	0	0	338	1 (0.3)
Total/overall percentage	90	80 (88.9)	1,766	18 (1)