Impact of ChAdOx1 nCoV-19 (Covishield™) Vaccination: How Long Will It Persist?

Table 3

Baseline SARS-CoV-2 seropositivity among HCWs based on their exposure to COVID-19 patients or samples.

Occupation of the participants	Exposure to COVID-19 patients/samples, n (%)
	Exposed		Nonexposed
	Total	BLS	Total	BLS
Doctor (n = 48)	30 (62.5)	10 (33.3)^1,2	18 (37.5)	2 (11.1)^1
Nurse (n = 39)	39 (100)	15 (50)^1	0 (0)	0 (0)
Laboratory technician (n = 26)	11 (42.3)	6 (54.5)^1,2	15 (57.7)	2 (13.3)^1
Office assistants (n = 37)	34 (91.9)	7 (20.6)^1	3 (8.1)	0 (0)

BLS = baseline seropositive; 1 = calculated out of the total of exposed or nonexposed HCWs; 2 =  in exposed vs. nonexposed HCWs.