Son of Omicron?

There are actually two subvariants of Omicron COVID. The one that upended the world in recent months is BA.1. There’s also BA.2, so far considered a subvariant of Omicron, and it’s been spreading around the world at BA.1’s expense. There’s seems to be little debate that BA.2 is at least somewhat more transmissible Classic Omicron (BA.1). But a study released today in preprint out of Japan suggests it is also more pathogenic. So more transmissible than Omicron and on a par with Delta when it comes to severity of disease. (Not good!) But a separate study out of South Africa, reported yesterday, says that BA.2 is on a par with Classic Omicron when it comes to severity of disease.