Table 3.

Test results for COVID-19/SARS-CoV-2 antibodies.

	COVID-19 Test (Nasopharyngeal)	SARS-CoV-2 Antibodies § (Serum)
Patient 1
Day 8 *	Positive	n.a.
~Day 40 *	n.a.	n.a.
~Day 100 *	n.a.	Negative
Patient 2
Day -2 (before COVID-19 symptom onset)	Negative
Day 40 *	n.a.	Positive IgG (19.4 U/mL) and IgA (15.2 U/mL) SARS-CoV-2-nucleocapside, Positive IgG SARS-CoV-2-spike (18.3 U/mL), Positive IgG SARS-CoV-2-RBD (19.9 U/mL)
Day 100 *	n.a.	Negative
Patient 3
Day -2 (before COVID-19 symptom onset)	Negative	n.a
Day 40 *	n.a.	n.a.
Day 100*,1	n.a.	Positive IgG (59.3 U/mL) and IgA (28.6 U/mL) SARS-CoV-2-nucleocapside
Patient 4
Day 2*	Positive	n.a.
Day 40*	n.a.	n.a.
Day 100*	n.a.	Negative

Abbreviations: n.a.: not available; * after COVID-19 symptom onset; ¹ five days after canakinumab increase (300 mg/q4w), ^§ Antibody against SARS-CoV-2-spike, SARS-CoV-2-RBD, SARS-CoV-2-nucleocapside, Reference values: SARS-CoV-2-nucleocapside: IgG >11.0 U/mL, IgA >4.4 U/mL; SARS-CoV-2-spike: IgG >15.0 U/mL, IgA >6.0 U/mL, SARS-CoV-2-spike-RBD: IgG >15.0 U/mL, IgA >14.0 U/mL.