Originally Posted by
rickair7777
Since the several variants in question are actually lineal descendants of Delta 1.0, "delta plus" is a reasonable nomenclature.
Echo (epsilon in the Greek) would be a sibling/cousin, not a child of Delta 1.0.
mutagenesis is a bitsh ain’t it.
the good thing is they almost invariably become less lethal as they mutate. They become easier to spread and sometimes jump species, but the lethality generally weakens (with notable rare exceptions)