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The Red Cross Blood Donation centers perhaps come closest to doing this. From their emails, it sounded like they never saw widespread active antibodies (until a
by manwe150 5y ago
The Red Cross Blood Donation centers perhaps come closest to doing this. From their emails, it sounded like they never saw widespread active antibodies (until a few months ago).
- nradov 5y agoThe Red Cross only did antibody testing which has a significant false negative rate, especially on patients who recovered from mild infections many months ago. That's why getting accurate numbers would require repeatedly testing the same subjects at regular intervals, and also assaying their memory T cells.