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.<p>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.