The Rise and Fall of Antibodies in Mild and Asymptomatic COVID-19

A preprint study in biorxiv shows that not all who have asymptomatic and mild Covid-19  develop protective antibodies developed against  COVID-19. As a brief background, after exposure to a virus or bacteria, whether natural or by vaccination, the immunoglobulin M (IgM) rises, followed by immunoglobulin G (IgG). Immunoglobulin is the technical term for the antibody…