Here comes Lambda
I'm seeing a possibility that the lambda variant is resistant to vaccines.
This makes sense. In a population that is half vaccinated and half not, then the delta variant will burn like wildfire in the unvaccinated, and in those trillions of virus particles, there will be some that have a mutation that's vaccine resistant. And that mutation wiol spread in both vaccinated and unvaccinated.
It's evolution in action. Covid will adapt to its environment.