claim: real-world data suggest antibody positivity to sars-cov-2 is associated with a decreased risk of future infection.
evidence_1: this finding suggests that people who have a positive antibody test result using widely available assays have substantial immunity to sars-cov-2 and are at lower risk for future infection.", "neutralizing antibodies correlate with protection from sars-cov-2 in humans during a fishery vessel outbreak with high attack rate.")