Do we have any idea yet as to which of the currently approved or about to be approved vaccines might be best at preventing transmission? Any reason to believe ones using particular techniques might be better or worse?
It could well be that the best vaccine for preventing individual illness might not end up being the best one for preventing transmission. Until we've got that data, it would be hard to design a complex targeted system that would actually do what we want. Once we do have that data, then it seems likely some vaccines will be targeted at demographics more likely to be out of the home interacting with people.
The NHS will have to do the usual QALYs (or whatever they are) calculations at some point, I assume, but surely we don't know enough yet about the vaccines to be sure of how to even make those calculations? Likeliness of severe illness from covid seems the best criterion for vaccination right now, which we do know is highly correlated with age.
There's no getting away from it, the ECV are in a pretty awful position no matter what happens, for quite a while, as some can't have a vaccine at all and will be waiting for true herd immunity as talked about by Chris Whitty.
I'm in a Tier 2 area in SE England where case numbers are going up fast, with the line steeper than at any time other than the second week of April. Rates per 100k now well above average. Do people think we're likely to see places like that going into Tier 3 tonight/tomorrow?