Table 2 Positivity of SARS-CoV-2 antibody assays.

From: Activation of SARS-CoV-2 neutralizing antibody is slower than elevation of spike-specific IgG, IgM, and nucleocapsid-specific IgG antibodies

Severity

GroupM (mild + moderate)

Group S (severe + critical)

      

Patient number

52

16

      

Sample number

95

73

      

Weeks from onset

Sample number

Positive (%)

Sample number

Positive (%)

S-IgG

S-IgM

N-IgG

S-IgG

S-IgM

N-IgG

0–6

20

3 (15)

4 (20)

2 (10)

10

1 (10)

3 (30)

1 (10)

7–13

22

11 (50)

11 (50)

10 (45)

11

7 (64)

7 (64)

6 (55)

14–20

16

15 (94)

14 (88)

12 (75)

9

8 (89)

8 (89)

9 (100)

21–27

14

13 (93)

11 (79)

13 (93)

11

11 (100)

10 (91)

10 (91)

28–34

7

8 (100)

8 (100)

8 (100)

7

7 (100)

6 (86)

6 (86)

35–41

4

8 (100)

7 (87.5)

8 (100)

4

4 (100)

3 (75)

3 (75)

42–48

12

12 (100)

12 (100)

12 (100)

21

21 (100)

18 (86)

21 (100)

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