Pfizer

Cabinet minister had suggested the government would not be able to stop wealthy people jumping the queue.
The Pfizer-BioNTech jab needs to be stored at minus 70C – posing a logistical challenge.
There are still a few hurdles to overcome before the Pfizer vaccine is available – and perhaps even more if you aren't on the priority list.
From safety concerns to how it actually works, here's a quick guide.