[rossdavidh]

The graph showing Omicron outcompeting Delta is, I think, actually good news. The worse condition would be if they don't even compete, i.e. Omicron was so different that having either Delta or Omicron wouldn't make you immune from the other. The pretty abrupt decline in Delta as Omicron ramps up, suggests pretty strongly that they do compete.

I think this one might be The One. Everyone will be immune soon, perhaps, one way or the other. But if Omicron and Delta compete, then it seems plausible that the existing vaccines would at least help a bit with the severity of symptoms.

[tgv]

Yeah, but only if it's milder than Delta, of course. This was my initial hope: if the virus mutates so quickly, it could mutate itself out of existence after a while by becoming very contagious but as strong as a common cold.

Of course, once this happens, people will forget it ever happened and ignore the next warning signals.

[SketchySeaBeast]

The other side of that is that, given the long time COVID takes to kill someone and the amount of time they are infectious before that, it doesn't have much of a reason to become less deadly. Sure, it could mutate by chance to become more benign, but if it's communicable for twoish weeks, including while asymptomatic, then stops being communicable, and then kills the host what does it matter evolutionarily speaking that the host died? I don't think there's any pressure on COVID to become less deadly.

[jsnell]

You are misreading the graph. The y axis is a percentage of total infections, not absolute number of infections. You can't tell from it whether the number of Delta infections is down, steady, or even up.

[Cthulhu_]

I don't see how a mutation, no matter what, being more infectious is good news. The fact it (and Delta for that matter) was allowed to mutate in the first place is already pretty telling that the approach used to stem the tide was not effective.