Table. Factors associated with SARS-CoV-2 infection among educational staff in Berlin, Germany, June to December 2020 (n = 17,448).

Characteristics	Result of SARS-CoV-2 PCR				OR	95% CI
	Positive (n = 210)		Negative (n = 17,238)
	n	%	n	%
Sex^a
Male	58	1.2	4,642	98.8	Ref.	NA
Female	151	1.2	12,535	98.8	1.0	0.7–1.3
Age (years)
Median, range	36 (18–65)		41 (18–78)		0.96	0.95–0.98
Profession
Teacher	125	1.0	12,887	99.0	Ref.	NA
Preschool educator	85	1.9	4,351	98.1	2.0	1.5–2.7
Reported contacts to SARS-CoV-2-positive individuals outside work^b
No	20	1.3	1,510	98.7	Ref.	NA
Yes	8	7.8	94	92.2	6.4	2.4–15.7
Reported contacts to SARS-CoV-2-positive individuals at work^b
No	23	1.8	1,290	98.2	Ref.	NA
Yes	5	1.6	316	98.4	0.9	0.3–2.4

CI: confidence interval; NA: not applicable; OR: unadjusted odds ratio; SARS-CoV-2: severe acute respiratory syndrome coronavirus 2.

^a Missing data for sex (n = 62).

^b Data from one testing site (A) only.