Table 1.

Characteristics of the individuals that were included in this study.

	Unexposed without Cross-Reactivity (No CR, N = 26)	Unexposed with Cross-Reactivity (CR, N = 59)
			Convalescent (Conv, N = 64)	ANOVA p
Age (years)	44 (26–63)	46 (24–66)	41 (26–67)	0.184
Sex (Female)	20 (77%)	41 (70%)	41 (64%)	0.36 0.392
Body Mass Index	22.5 (20–27)	23.6 (21–26.2)	23.6 (22–26.8)
Obesity (>30)	50 (13%)	4 (7%)	8 (13%)
Smoking	3 (12%)	19 (32%)	25 (39%)	0.005
Diabetes mellitus	1 (4%)	3 (5%)	0	0.098
Hypertension	0	6 (10%)	6 (9%)	0.781
Days from COVID-19 to inclusion	-	-	198 (179–216)	-
Serology at inclusion:
Anti-N IgG positive (N)	0	0	37 (58%)	<0.001
IgG antibody titer (AU/mL)	4.6 (4–6.3)	4.66 (3.7–6.1)	10.1 (5.3–19.8)	<0.001
Neutralizing antibodies (ng/mL)	-	-	1692 (1004–2562)
Anti-S T-cell response:
CD4+ T-cell positive (N)	0	35 (59%)	33 (52%)	0.792
CD8+ T-cell positive (N)	0	31 (53%)	28 (44%)	0.570