Table 3.

Frequency of positive humoral and cellular anti-SARS-CoV-2 responses

	Patients (n=96)	Healthy controls (n=29)	p value
Anti-SARS-CoV-2 S1 IgG (>1·1 index)	47/96 (49%)	29/29 (100%)	<0·001
IFNγ release (>0·15 IU/mL)	14/44 (32%)	22/25 (88%)	<0·001
S1 IgG positive and IFNγ positive	10/44 (23%)	22/25 (88%)	<0·001
S1 IgG negative and IFNγ negative	20/44 (45%)	0/25 (0%)	<0·001

Data are n/N (%). Frequency of anti-SARS-CoV-2 S1 IgG response above a threshold of 1·1 (index signal to cutoff ratio), IFNγ release higher than 0·15 IU/mL for patients and healthy controls. p values computed by Pearson's r² test. IFNγ=interferon-γ.