Table 1.

Comparison between high risk and low risk health care workers regarding demographic, clinical information, exposure information, and COVID-19 like symptoms (n=455).

Demographic characteristics	All subjects	Health care workers		p
		High risk group	Low risk group
		n=143	n=312
Age (mean ±SD)	32.8 ± 8.3	33.7 ± 8	32.4 ± 8.4	0.110
Gender (n, %)
Male	239 (52.5%)	92 (64.3%)	147 (47.1%)	0.001*
Clinical history (n, %)
Past surgical history	118 (25.9%)	59 (41.3%)	59 (18.9 %)	<0.001*
Past medical history	89 (19.6%)	30 (21%)	59 (18.9%)	0.606
Hypertension	25 (5.5%)	11(7.7%)	14 (4.5%)	0.164
Diabetes	9 (2.0%)	2(1.4%)	7 (2.2%)	0.726
Asthma	19 (4.2%)	8 (5.6%)	11 (3.5%)	0.306
Allergy	16(3.5%)	5(3.5%)	11 (3.5%)	0.988
Other medical conditions#	25 (5.5%)	10 (7.0%)	15 (4.8%)	0.342
Medication intake	99 (21.8%)	32 (22.4%)	67(21.5%)	0.828
Smoking history (n, %)
Current smoker	24 (5.3%)	5 (3.5%)	19 (6.1%)	0.251
Ex-smoker	62 (13.6%)	15 (10.5 %)	47 (15.1%)	0.187
Exposure information (n, %)
Direct contact with the environment where the confirmed COVID-19 was cared for	187 (41.1%)	74 (51.7%)	113 (36.2%)	0.002*
History of travelling in proximity with confirmed COVID-19 patient	100 (22%)	14 (9.8%)	36 (11.5%)	0.580
Family member with COVID-19 diagnosis	24 (5.3%)	6 (4.2%)	18(5.8%)	0.486
Family member with pneumonia diagnosis	11 (2.4%)	4 (2.8%)	7 (2.2%)	0.747
Symptoms compatible with COVID-19 in the past 2 weeks (n, %)
Flu-like illness	108 (23.7%)	50 (35%)	58 (18.6%)	<0.001*
Wheezing	42 (9.2%)	15 (10.5%)	27(8.7%)	0.530
Fever	61 (13.4%)	25 (17.5%)	36 (11.5%)	0.084
Gastroenteritis	96 (21.1%)	34(23.8%)	62(19.9%)	0.343
Sore throat	133 (29.2%)	61(42.7%)	72(23,1%)	<0.001*
Muscle aches	81(17.8%)	34(23.8%)	47(15.1%)	0.024 *
IgG seroprevalence
+VE 36	36 (7.9) [5.8-10.8]	1,0.7	35,11.2	<0.001*

^#Liver disease, renal disease, cancers and autoimmune and other immunological disorders

*statistically significant.