Table 1.

Epidemiological information and anti-SARS-CoV-2 antibody status of 7554 healthcare workers participating in the study

	Anti-SARS-CoV-2 Ab		95% CI
	Positive/total	%
Total	166/7554	2.20	1.89–2.55
Age group (Y)
≤ 30	64/2170	2.95	2.32–3.75
31–40	39/1951	2.00	1.47–2.72
41–50	29/1430	2.03	1.42–2.90
51–60	23/1467	1.57	1.05–2.34
> 60	11/536	2.05	1.15–3.64
Gender
Female	115/5431	2.12	1.77–2.54
Male	51/2118	2.41	1.84–3.15
3rd gender	0/5	0.00
Patient care occupations
Nurse	68/2185	3.11	2.46–3.93
Physician	38/1345	2.83	2.07–3.85
Other	17/1199	1.42	0.88–2.26
Total	123/4729	2.60	2.18–3.10
Non-patient care occupations
Administration/IT	15/822	1.82	1.11–2.99
Research	12/977	1.23	0.70–2.14
Transportation	1/28	3.57	0.63–17.71
Cleaning personnel	4/119	3.36	1.32–8.33
Other	11/879	1.25	0.70–2.23
Total	43/2825	1.52	1.13–2.04

Binominal 95% confidence intervals (95% CI) were calculated using the Wilson score interval