I got a fourth round, bivalent pfizer/BioNTech flavor, a couple weeks before I went to a conference in Boston. Didn’t get Covid there (a bunch of people I was w

I got a fourth round, bivalent pfizer/BioNTech flavor, a couple weeks before I went to a conference in Boston. Didn’t get Covid there (a bunch of people I was with did), but there’s no way to know how much that was just luck. I had a minimal reaction compared to the moderna ones I had for the first three moderna doses I had, I think because of the lower dose.