Hospitalizations in vaccinated breakthroughs 21% vs 32% rate pre-vaccine. (I wonder if this is from increasing monoclonal antibody intervention or other early treatment or human decisions about relative risks?)
Hospital cases ending up in ICU were 31% vs 32%.
Deaths were 4% vs 12%. (This was a dramatic reduction, but how much of the improvement was from better treatments developed later in the pandemic? Also was the later cohort more heavily weighted with under 75 yrs of age?)

The last slide (17) has the hospitalization risks they found per condition if you are interested.