I thought I would share this link which popped up in my inbox today:
Whatever you think about the various authorities and their information, I have read through this and it answers a lot of questions in exactly the same way I would have done but it saves me writing it!
Above all, I need to point out that there are a few reasons for the speed of getting to a vaccine which seems to concern a lot of people: unlike most vaccines or drugs, when it comes to Covid, everything is being shared. Large numbers of patients are ready and waiting and the Biontech/Pfizer vaccine has already been tested in 43,000 patients in 6 different countries, about half got the vaccine, half the placebo. It is existing technology so the safety aspect was already halfway there. And the technology for MAKING the vaccine is different from the usual process so large volumes can be produced quickly and they started making it even before knowing how successful it would be - so they are ahead of themselves.
Together we are stronger ...