I had had my flu shot the previous November, and I've never had the "flu" like this in my life.
I left UPS at the end of March, within a month, 3 of my coworkers got Covid.
No one in my immediate family has been jabbed, nor do we plan to. We aren't putting any of that experimental stuff in our bodies.
The antibody test is available at any labcorp location for 10.00. I had my results the next day.