Anecdotal: in my extended social circle, at least three or four seniors (e.g. aged 60-79) have recently (past month) caught the latest version. Also a pair of younger women (probably aged ~ 40) both reportedly have it. I don't know for sure all these are vaxxed, but likely so (e.g. older, still trust their doctors and/or in the case of the females, having tatoos and scary hair plus, er, certain "lifestyle choices" are highly predictive of being Democrats.)