So your guess is 2023 since most of the third world won't be vaccinated until 2022 (and then there are the concerns about the lower performing Chinese vaccines)? Or do you think it burns through most of the world before then and peters out?
I echo kicking's point....flu is every year and this is beginning to look more like flu than chicken pox or even enterovirus, but you have a point: we won't know until the initial wave of infection has made it's way through the entire planet (which BTW means we have a China problem: billion people, China dedicated to zero COVID still, vaccine which doesn't work though they are trying to find work arounds and not all the Chinese vaccines are as bad).