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Is it possible to use convalescent serum - antibodies from those who have recovered from COVID-19 - to treat others?
This is a strategy that is currently being tested. The concept of giving antibodies from one person to another to protect from disease is called passive immunization. You may also hear about this in the context of convalescent serum; serum just refers to the part of the blood that has antibodies in it.
One small study's results are cause for hope, but the study was not definitive. More studies are necessary.
Drafted 27 May 2020