A major breakthrough has been announced in the race for a Covid-19 vaccine, with the jab from Pfizer and BioNtech found to be more than 90% effective.
Here is everything you need to know about the coronavirus vaccine race. What progress is being made with Covid-19 vaccines? There are currently more than 200 coronavirus vaccine candidates being tested around the world.
About a dozen Covid-19 vaccines around the world are currently in the final stages of testing, but the one from German biotech firm BioNtech and US pharmaceutical company Pfizer is the first to report any results.
There are two frontrunners in the Covid-19 vaccine race - the one from Pfizer, called BNT162b2, and another being developed by the University of Oxford and