No, it is incredibly useful. That means a subset of the population, or a population certain environments, can be exposed and not get infected. AFAIU, every expo

No, it is incredibly useful. That means a subset of the population, or a population certain environments, can be exposed and not get infected. AFAIU, every exposure has the chance of the immune system creating antibodies as it does for foreign cells. Furthermore, if we know that shared living spaces, farm work communes, jails etc are the main source of serious infection, we can hyper-focus on those scenarios and allow the economy to somewhat recover. We all need to get off our relative high horses, by the way. What is an opportunity to work from home for a lot of us, is a recipe for financial disaster and bankruptcy for many, many others.