So trick here would be to know how many time one can be infected with Delta without developing a severe case of COVID19, Because the virus is going to be bumpi

So trick here would be to know how many time one can be infected with Delta without developing a severe case of COVID19, Because the virus is going to be bumping across the entire population as if the vaccines didn't exists at all. Also, if Delta has entire populations to bump around unchecked, new variants could / will emerge. So more viral surprises are in the way to us.