Originally Posted by rickair7777

So far anecdotal reports only of breakthrough (vaccine or natural).

Also severity not known... make enough changes and it's likely to be change the potency of the bug, for better or worse. Mutations do not inherently correlate to severe disease, in fact evolution doesn't really reward that in the long run (the host population dies off, evolves to evade, or takes deliberate measures to avoid infection in the case of one species). South Africa has very little Delta right now, so there's no clear compare and contrast of Nu vs Delta.

Do you have a link to discussion of enhancement? I haven't seen anything about that yet, but was busy cooking a turkey yesterday.