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. 2021 Feb 3;214(4):179–185. doi: 10.5694/mja2.50940

Collection group

Samples

IgG‐positive

IgG titre = 10

IgG titre ≥ 160

IgA or IgM positive*

Neutralising antibodies*

General pathology

3231

19 [0.6%]

11 (58%)

3 (16%)

6 (32%)

8 (42%)

Antenatal screening

560

7 [1%]

3 (43%)

0

0

5 (71%)

Plasmapheresis donors

1548

12 [0.8%]

2 (17%)

1 (8%)

0

11 (92%)

*

Only samples positive for SARS‐CoV‐2‐specific IgG were tested for SARS‐CoV‐2‐specific IgA, IgM, and neutralising antibody.