> it’s entirely believable to say that omicron could go on to infect fewer people than delta due to the past two years of vaccination and immunity and die off

> it’s entirely believable to say that omicron could go on to infect fewer people than delta due to the past two years of vaccination and immunity and die off While this does appear plausible, doesn't this depend to some degree on what exactly is the immunity conferred by vaccination or past infection? If vaccines and past infections are effective against severity of case/symptoms but ineffective against new/re-infection, then you could still see greater numbers with omicron than even with delta. No? Still not forever exponential, of course.