My jabs align pretty closely with yours temporally, except I got a half booster in late Oct. ‘21 and another one in early May ‘22.
Also had a Delta infection right after my first booster, but that infection apparently didn’t create any antibodies based on CARES results (last one in Feb ‘22). Or at least the assay didn’t detect them for some reason.
I can’t remember where I saw it, but I read a piece discussing people who were vaxxed (not MRNA specific, any vax), had a breakthrough infection, but didn’t produce C19 antibodies in response. The upshot was that scenarios like this actually result in stronger T and B cell response and longer lasting, more durable immunity overall. Potentially for other types of viral infections as well.
I have no clue about any of this, but I’ll take it.
I’ve been living normally, maskless everywhere since January, so I’m sure I was exposed to Omicron at some point.