Antibodies against COVID-19 in people who’ve recovered from the disease begin to vanish about three months after they develop symptoms, researchers say.
This suggests that sooner is better for recovered COVID-19 patients to donate antibody-containing blood plasma for convalescent plasma treatment, according to the authors of a small study published Oct. 1 in the journal Blood.
“Based on our findings, antibodies against the new coronavirus are not eternal,” said study author Renée Bazin, director of innovation at Canada-based Héma-Quebec blood center.
Bazin’s team said their findings may prove important for creating vaccines and research into how many people have recovered from COVID-19.
In convalescent plasma treatment, plasma from recovered patients is given to newly ill patients in an attempt to boost their ability to fight the virus.
“While many clinical trials are underway to better understand whether convalescent plasma is clinically beneficial for treating COVID-19, a key question is at