Preexisting antibodies targeting SARS-CoV-2 discovered in small proportion of uninfected individuals

Scientists have detected preexisting antibody-driven immunity against SARS-CoV-2 in a small proportion of individuals who were uninfected at the time of sampling. Sixteen out of 302 adults (5.3%) harbored IgG antibodies that were likely generated during previous seasonal “common cold” coronavirus infections, and which cross-reacted with subunit S2 of the SARS-CoV-2 spike protein complex. Notably, […]