I would imagine that depends on a couple factors, but primarily age. My parents got it - father really bad, Mother was asymptomatic. He finally got his 2nd shot this month after getting his first in January (right before he came down with it). My mother got hers on schedule, in February. When they tested my dad's antibodies, even though he'd had it a month ago they weren't particularly high.
A co-worker in her early 20's got it way back in November right around Thanksgiving. I just talked to her last week and they still won't give her a shot, they tested her antibodies and they are like 10x higher than what they see in vaccinated people. I thought she was making stuff up but she was totally serious and kind of pissed she couldn't get vaccinated. I'm completely confident her case is an outlier, but an interesting one.
It's no secret that the younger you are the more robust your immune response is, but I wouldn't have expected it to be that extreme. It could be totally coincidental, but it makes sense. I'm sure having COVID already makes one safer, but I wouldn't bank on vaccinated equivalency in most cases. The million-dollar question is are people who have had COVID before less likely to spread the infection to others because of lower virus loads, and I'm sure the answer to that is years away. Personally, I feel pretty safe around my friends who have had it before, vaccinated or not. The only reason we don't hang out is because I have unvaccinated kids and want to minimize their risk.
