I believe vaccinated people still account for a very small number of cases. Even with the delta variant, and an even smaller number of hospitalizations.
People have pointed to this small city in Maine? I think to show that vaccination doesn't help transmission. But I think that data has been mischaracterized.
Basically a very small town hosts a "bear week" where gay men have a week of.....socializing. The town population swells to about 60k. And a lot of these are gay men who are maybe there to meet other gay men for the week. This isn't some like political convention and it's not comic con. It's a place where people from around the country go to meet a type of gay man they find attractive.
Given its a small town and a lot of people and probably quite a bit of... intimate socializing in very tight, enclosed spaces its a dream situation for transmission of an airborne virus with asymptotic spread.
The big news, to me, is that out of like 60,000 mostly vaccinated people only 578 even tested positive for the virus.
That's like .78% transmission. Had this been an unvaccinated population I think the transmission rate would have been much, much, much higher. So that suggests to me that the vaccine is effective.
However it served as the basis for rethinking mask guidance for the vaccinated indoors.
While vaccinated people carry as much viral load as the unvaccinated for the delta variant, in the first and original iteration vaccinated people, even in breakthrough cases had less viral load.
And even with the delta variant, I believe that the tcell response has still been very good amongst the vaccinated, which IIRC means less time sick because the tcell response destroys the infected cells.
I think that had we gotten to 70+% vaccination early on we may have achieved herd immunity and wouldn't have needed a booster. Early testing seemed to, and still does show a degree of vaccine protection against the delta variant. But for those who are not vaccinated its maybe a bit more of an issue.
I can provide linked cites to everything except my last point. I had a discussion about this a week or two ago and had to show my work. If anyone wants to see them I can dig them up.
@TheGecko. I have also heard type of mask matters. I know you're not getting vaccinated so I wanted to bring this to you attention so you're as safe as possible