Pharmaceutical firm Pfizer has claimed that new test results showed that its coronavirus vaccine is 95 per cent effective, safe and also protects older people most at risk of dying.

The announcement, from Pfizer and its German partner BioNTech, just a week after they revealed the first promising preliminary results, comes as the team is preparing within days to formally ask United States (U.S.) regulators to allow emergency use of the vaccine.

They also have begun “rolling submissions” for the vaccine with regulators in Europe, the UK and Canada and soon will add this new data.