A coronavirus vaccine is 90% effective in preventing the disease, according to a large-scale clinical trial. Drugs giant Pfizer and its partner BioNTech SE have found no serious safety concerns with the jab, which the UK has ordered 40 million doses of.
It is a major breakthrough in the fight against coronavirus and reportedly means the vaccine could be available in Britain by the end of the year - if it is approved by regulators.
Pfizer and BioNTech SE are expected to seek US emergency use authorisation later this month. Here are the answers to your questions about the vaccine: Is this big news? Yes.
These are interim findings and studies will continue but analysis shows that the Pfizer vaccine can prevent more than 90% of people from