Read More Related Articles Read More Related Articles The vaccine has been tested on 43,500 people in six countries and no safety concerns have been raised. The UK has secured 40 million doses in total of the vaccine, with 10 million due in the country by the end of the year if the jab is approved. People will need two doses, meaning not enough vaccine has been secured for the entire UK population. Pfizer and BioNTech say they will now apply for authorisation for emergency use of the jab in the US. Another jab, from US firm Moderna, was shown this week in early data to be almost 95 per cent effective. The UK has ordered five million doses of that jab, and also awaits the results of the Oxford University and AstraZeneca vaccine study – which is due to report soon. Changes to the Human Medicine Regulations announced in October will allow the Medicines and Healthcare products Regulatory Agency (MHRA) to authorise temporary supply of vaccines, if one becomes available before 2021.