At that point it’s probably best to move past talking about a vaccine as conveying a percentage of immunity in aggregate among the population and to discuss the

At that point it’s probably best to move past talking about a vaccine as conveying a percentage of immunity in aggregate among the population and to discuss the biological processes more deeply. Ie it’s really making your immune system have some ability to abate an amount of viral load hopefully more than baseline prior to vaccination. But it seems clear that any biological system would have an upper limit to abatement. I wonder whether that’s much of a fleshed out area of study.