The paper I shared actually doesn't support the claim of preventing infection.
The trials showed a minimal risk of adverse responses to the injection itself and what appeared to be a reduced rate of symptoms. The trials didn't cover impact on infection rates at all, that would have required proactively testing every participant for infection which wasn't done. The trials only followed self reported symptoms, meaning all the study can indicate is a correlation with reduced symptomatic infection.
alt Hacker News
The paper I shared actually doesn't support the claim of preventing infection.
The trials showed a minimal risk of adverse responses to the injection itself and what appeared to be a reduced rate of symptoms. The trials didn't cover impact on infection rates at all, that would have required proactively testing every participant for infection which wasn't done. The trials only followed self reported symptoms, meaning all the study can indicate is a correlation with reduced symptomatic infection.