antibodies to sars-cov-2 are associated without protection against reinfection
antibodies to sars-cov-2 are associated without protection against reinfection
overall, positive baseline anti-spike antibodies were associated with lower rates of pcr-positivity (with or without symptoms) (adjusted rate ratio 0.24 [95%ci 0.08-0.76, p=0.015]).", "conclusions prior sars-cov-2 infection that generated antibody responses offered protection from reinfection for most people in the six months following infection.")