Table 1:

Characteristics of healthcare workers included in the study.

	All	Naïve	Previously infected
Dosing interval
Days, median (IQR)	69 (46–77)	69 (36.5–77)	66 (63–77)
Days, range	17–92	17–92	19–90
Weeks, median	9.86	9.86	9.43
Days post V2
Median (IQR)	30 (28–32)	30 (28–32.8)	29.5 (26–31.3)
N	108	83	25
Female, N (%)	68 (63%)	48 (58%)	20 (80%)
Male, N (%)	40 (37%)	35 (42%)	5 (20%)
Mean age	35.14	34.74	36.44
Age in years, median (IQR)	33 (24–42.5)	33 (23–42.8)	35 (28–42)
Age range	21–66	21–66	21–63
Infection status, N (%)
Naïve	83 (77%)	83 (100%)	0 (0%)
Previous SARS-CoV-2	25 (23%)	0 (0%)	25 (100%)
Ethnicity (self-reported*), N (%)
White*	90 (83%)	68 (82%)	22 (88%)
Asian*	10 (9%)	8 (10%)	2 (8%)
Black*	0 (0%)	0 (0%)	0 (0%)
Other*	5 (5%)	4 (5%)	1 (4%)
Unreported	3 (3%)	3 (4%)	0 (0%)