It really depends what the validated antibody testing and so forth tell us
Some of the antibody tests out there are throwing 16% false positives, so we really don't know how much of the population has had it. Right now it kind of seems like 10% is a high end estimate. So how many will have had it by fall?
It's possible that it's still a small number and having sporting event crowds then would mean heading right back to where we are now to calm things down again.