SARS-CoV-2 SPIKE Antibody Levels can Indicate Immuno-Resilience to Re-infection: a Real-World Study

Real-world study showing SARS‑CoV‑2 spike antibody titers predict risk of symptomatic and severe COVID‑19, with ≥ 2,500 U/mL linked to a 62–87% reduced 12‑month infection risk.