Statistically significant lower risk is seen for mortality and hospitalization. 8 studies from 8 independent teams in 6 countries show significant improvements.
Meta analysis using the most serious outcome reported shows 18% [6‑28%] lower risk. Results are worse for Randomized Controlled Trials.
No treatment or intervention is 100% effective. All practical, effective, and safe means should be used based on risk/benefit analysis. Multiple treatments are typically used in combination, and other treatments are significantly more effective.
All data to reproduce this paper and sources are in the appendix.
Covid Analysis et al., Sep 2024, preprint, 1 author.