Protective Antibodies Against Coronaviruses are Short-Lived

A common belief is that once you get exposed to the COVID-19  virus, then a long-lasting immunity will develop, and there will be protection against COVID-19. That may not be the case. Two preprint studies, from Wuhan, China, and Amsterdam answers those questions. In both studies, the IgG or immunoglobulin G was tested. IgG confers…