How does the Pfizer/BioNTech vaccine work and who will get it?

Covid vaccine with an efficacy of almost 95% has been authorised by the UK medicines regulator

The Pfizer/BioNTech Covid vaccine, which has an efficacy of almost 95%, has been authorised by the UK medicines regulator, making the UK the first western country to license a vaccine against the disease. The UK has 40m doses of this vaccine on order.

Continue reading…