f this is true, the severity and death rate could be much lower than anticipated, and we could be closer to herd immunity than projected. Highly accurate antibody tests are scaling production and distribution which will definitively answer this question hopefully soon.
One could imagine a world in the next few months where everyone is tested and all but the immune-compromised go back to a socially distanced but more normal life.
We wear bracelets or carry a phone certificate which indicate our status, and track infections where they emerge..."
Yay, let's all cheer for antibody-based freedom.