@olamundo

We have good tests here. I think you can just assume that the dominant variant is (or will soon be) delta because it is so transmissible. It quickly become ~90% of cases.

Being vaccinated is not a panacea. Vaccinated people can still infect others and can still become sick and sometimes die.

If the infection rate in the population is reduced very low, then you are safer because the person you are next to is probably not infected.