Without a vaccine and pervasive testing, isolation resets the clock on the pandemic curve and it starts like Groundhog Day all over again, but at a potentially lower level. It will keep happening over and over again, especially spreading N <--> S hemispheres with the seasons. It will keep happening until either everyone is infected, resulting in hundreds of millions of cumulative deaths, indefinite isolation, or a vaccine is widely-deployed.
Without a vaccine and pervasive testing, isolation resets the clock on the pandemic curve and it starts like Groundhog Day all over again, but at a potentially lower level. It will keep happening over and over again, especially spreading N <--> S hemispheres with the seasons. It will keep happening until either everyone is infected, resulting in hundreds of millions of cumulative deaths, indefinite isolation, or a vaccine is widely-deployed.
That is reality.