The celebrated Dr Fauci in the US just stated that the vaccine is expected to be 50% effective, maybe less. I've read that for those 65+ it could be no more than 20% -- IF there is a SAFE vaccine. A vaccine is NOT going to be a panacea. Social distancing will have to continue. I'm astonished at how few people are aware of this.If only we could dance tango in twelve months. Unless a vaccine arrives, even in 12 months tango will be a clandestine activity for the young and the brave/crazy.