I would say 3-5 years without vaccines. See for example the 1889 pandemic [1], which might have also been induced by a coronavirus. It's hard to say with a vacc

I would say 3-5 years without vaccines. See for example the 1889 pandemic [1], which might have also been induced by a coronavirus. It's hard to say with a vaccine since there is no real precedent. If I had to guess I'd say 1-3 years? [1] https://en.wikipedia.org/wiki/1889–1890_pandemic https://en.wikipedia.org/wiki/1889–1890_pandemic