This has nothing to do with Ukraine or Eastern Europe and everything to do with Americans not willing to have their kids vaccinated. Which is result of right wing propagandists who wanted to achieve exactly this and got rewarded for it.
24 of the cases originated at a church where the congregation is primarily eastern European. But to your point - as long as the local population is below 95% fully vaccinated, it's going to spread. Regardless of national origin or religious & personal beliefs.
