From: IgG response to spike protein of SARS-CoV-2 in healthy individuals and potential of intravenous IgG as treatment for COVID-19
Healthy individuals (197)
Peptide
No.9
No.10
Groups
 <  = 50y
 > 50y
Female
Male
Positive
117(79.05%)
45(91.84%)
83(82.18%)
59(61.46%)
Negative
31(20.95%)
4(8.16%)
18(17.82%)
37(38.54%)