There are two things that definitely impede transmission.
1) Vax'd people, though the benefit might be limited if vax'd people are seeing more breakthroughs and getting Delta, just not suffering from it
2) Already infected people. They likely won't get the Delta.
1) The US vax rate has slowed to a crawl.
2) Infection provides less protection than one vax shot, even against the strain that caused the infection.
Well, China and Poland are doing well.
Also Monserrrat and Tanzania.
![Big grin :D :D](data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7)
Seriously though, NZ seems to be holding it off pretty well still, with 5 deaths per million people (vs. 1873 for MAGA USA)
Even Australia with 35 DPM looks pretty good, and considering the freakout over ONE recent death, I expect they'll be okay.