Table 1.

Attack rate in health care workers.

Profession	n	AR	OR	95% CI
Cleaning, laundry, and Kitchen staff	208	0.96%	1
Physicians	475	4.00%	4.29	0.99–18.60
Nurses	657	7.15%	7.94	1.91–32.96
Nursing assistant	298	6.04%	6.62	1.52–28.85
Orderlies	39	15.38%	18.73	3.63–96.73
Other professionals	495	1.21%	1.26	0.25–6.31