Covid antibodies seem to fade quickly (similar to other cold family viruses). Some people only keep them for a few months after infection. - https://blogs.scie

Covid antibodies seem to fade quickly (similar to other cold family viruses). Some people only keep them for a few months after infection. - https://blogs.sciencemag.org/pipeline/archives/2020/07/15/new-data-on-t-cells-and-the-coronavirus https://blogs.sciencemag.org/pipeline/archives/2020/07/15/ne... - https://abcnews.go.com/Health/covid-19-antibodies-fade-months-study/story?id=71406787 https://abcnews.go.com/Health/covid-19-antibodies-fade-month... Also, anecdotally, a friend donated blood at the Red Cross and found he had covid antibodies. He had not been sick and has had no symptoms.