Well the other option is that everyone already catches it by then, and we move in without the immediate need for a vaccine, depending on length of natural immun

Well the other option is that everyone already catches it by then, and we move in without the immediate need for a vaccine, depending on length of natural immunity. Which I think is becoming the more likely outcome, given the increase in non symptomatic carriers. The catch will be if we attribute a drop off in hospital admits as successful containment or as the result of natural immunization/ herd immunity.