They are unvaccinated and had tighter restrictions and better compliance than we did. Their delta waves didnt get a chance to percolate.
Once people are out and about and gathering indoors like we saw in the south this summer when it was hot and now in the midwest and NE this winter the delta variant is going to attack the unvaxxed and there will also be breakthrough cases.
The German healthguy said by the end of Winter every German will be either vaccinated, recovered, or dead.
Anyway.... this is a theory. At some point everyone will be exposed to the virus and they'll not get it because of vaccination/immunity or they will get it. I'm still not clear on whether a vaccinated person who is exposed and it's "blocked" means it will always be blocked..... like did something trigger a response that shows it will always work or is it Russian Roulette?