Will Omicron crowd out the Beta and Delta variants and act like an airborne vaccine, albeit a naturally occurring one? 

“In other words, Omicron’s appearance is part of the normal and expected evolution of viruses: one towards greater transmissibility and lower mortality, a process called antigenic drift. A similar mutated strain apparently wiped out the Spanish flu bug.|

https://amgreatness.com/2021/12/27/an-airborne-vaccine/