I don't have numbers on "old vs young" hospitalization. I'd have to do some more googling for that and I need to get back to work. However, regarding efficacy

I don't have numbers on "old vs young" hospitalization. I'd have to do some more googling for that and I need to get back to work. However, regarding efficacy on the delta variant, from here [1]: Data so far suggests efficacy rates of approximately 67 percent for the J&J vaccine, 66 to 95 percent for the Moderna vaccine, and 42 to 96 percent for the Pfizer-BioNTech vaccine. Seems like pretty good efficacy to me. [1] https://www.healthline.com/health-news/heres-how-well-covid-19-vaccines-work-against-the-delta-variant https://www.healthline.com/health-news/heres-how-well-covid-...