"While some reports have come out saying antibodies to this virus go away quickly, we have found just the opposite—that more than 90 percent of people who were mildly or moderately ill produce an antibody response strong enough to neutralize the virus, and the response is maintained for many months," said Florian Krammer, Ph.D., Professor of Vaccinology at the Icahn School of Medicine at Mount Sinai and a senior author of the paper. "Uncovering the robustness of the antibody response to SARS-CoV-2, including its longevity and neutralizing effects, is critically important to enabling us to effectively monitor seroprevalence in communities and to determining the duration and levels of antibody that protect us from reinfection. This is essential for effective vaccine development."
Study findings are based on a dataset of 30,082 individuals, who were screened within the Mount Sinai Health System between March and October, 2020.
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So that begs the question, if a recovered COVID patient donates antibody rich plasma, do the donated antibodies get naturally replaced for the 5? months mentioned above or is the donor now only have say 4 months implied protection?
No. Donated antibodies in convalescent plasma do not replace themselves inside the patient who got the plasma.