Yep, the fundamental problem is that the antibody test only triggers positive well after you would already be infectious probably for days, and most likely symptomatic already at least. So it can't curtail the outbreak, though as others are pointing out it can be very useful to clear people after they are infected.
Just knowing: "yeah you caught it and recovered, get back out there, you're low risk" would be super helpful. Would allow you to go volunteer at a minimum.
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Also because by the time someone has antibodies they've already spread it to other people?
Yep, the fundamental problem is that the antibody test only triggers positive well after you would already be infectious probably for days, and most likely symptomatic already at least. So it can't curtail the outbreak, though as others are pointing out it can be very useful to clear people after they are infected.
Just knowing: "yeah you caught it and recovered, get back out there, you're low risk" would be super helpful. Would allow you to go volunteer at a minimum.