> antibody surveys were supposed to be the definitive proof that we were responsibly waiting for.
Simple question: Why?
For most coronaviruses, antibodies reflect only a temporary immunity, that is usual gone in 6-24 months, due to the nature of these viruses.
All an antibody survey shows is that antibodies can be created, not that they are effective long term. Showing a longer term immunity takes statistical analysis, usually after that temporary window has ended.
In fact, antibody surveys may not even show an effective temporary immunity, if the wrong kinds of antibodies are being screened for.
Knowing this, why was the antibody surveys supposed to be some golden bullet? The advice from the medical community was "this is being actively studied, wait and see."
The surveys provide the medical community with important data, but they don't really provide us with policy making data, and they certainly don't predict the future for the general population when exposed to the virus.