“One of the Red Cross requirements for plasma from routine blood and platelet donations that test positive for high-levels of antibodies to be used as convalescent plasma is that it must be from a donor that has not received a COVID-19 vaccine. This is to ensure that antibodies collected from donors have sufficient antibodies directly related to their immune response to a COVID-19 infection and not just the vaccine, as antibodies from an infection and antibodies from a vaccine are not the same.”
I just saw on Telegram the following from the bellow link:
Answers to Common Questions About COVID-19 Vaccines and Blood, Platelet or Plasma Donation Eligibility
You can donate blood after COVID-19 vaccinations.
Q: What is the different between COVID-19 antibodies that you develop from exposure to the virus and antibodies you develop as a reaction to the vaccine?
A: Antibodies that an individual produces when they’ve been exposed to the virus are slightly different from the antibodies that an individual produces when they’ve been vaccinated. When an individual has been infected with a virus, they produce antibodies to multiple regions of a virus, including the nucleocapsid protein. An individual who has received a COVID-19 vaccine will produce antibodies to the spike protein of the virus, but not the nucleocapsid protein, which will only occur in the event of a COVID-19 infection.