From what I'm reading, the best case for a vaccine is 3 years (both development and production on a large enough scale). By which point, it's a moot point beca

From what I'm reading, the best case for a vaccine is 3 years (both development and production on a large enough scale). By which point, it's a moot point because the vaccine will have gotten to herd immunity levels long before that. In other words, hunkering down won't really change the fact that the vaccine, if it comes at all, won't come in time.