Just tested positive for Covid a second time. First infection was Chanukah last year. I had tested and confirmed antibodies after my first bout. Never ended up getting vaccinated as I was relying somewhat on my natural antibodies.
I think I may have picked this up on simchas torah. According to the tech at Chemed there are lots of positives now.
They include those that are unvaccinated with prior infections and those who are vaccinated.