The COVID-19 pandemic

[taylortbb]

To me, that 95% prevention of hospitalization isn't great. However, I am having a hard time understanding their calculation -- what percent of people are actually protected? I mean, it sounds like you have a 1 in 20 chance of hospitalization if you get Delta even if you have two doses.

Normally they're measured against the control group, which would be unvaccinated. So when they say "95% protected against hospitalization" they mean "95% fewer hospitalizations than unvaccinated" . But it's always possible someone used a different (misleading) definition.