Probably routine vaccine breakthrough which does happen in rare cases (the individual in question was very old with multiple conditions) but roh roh. It makes sense, though, as every indication from India is that their version is much more contagious than the first, is reinfecting individuals who had mild or asymptomatic cases first go around, broke through previous regional resistance to the coronavirus (perhaps from prior coronavirus infections), and has been hitting younger people more seriously. Frankly surprised Biden/Fauci didn't put a travel ban in earlier and that the travel ban isn't more robust.
The ironic thing would be if the nonfunctional Chinese vaccine actually functions better against this variant than the mRNA vaccine. Unlikely. Probably CCP hopeful thinking. But life is messy and weird.